Integration of energy metabolism (Homo sapiens)
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Description
Glucagon and Insulin act through various metabolites and enzymes that target specific steps in metabolic pathways for sugar and fatty acids. The processes responsible for the long-term control of fat synthesis and short term control of glycolysis by key metabolic products and enzymes are annotated in this module as six specific pathways:
Pathway 1. Glucagon signalling in metabolic pathways: In response to low blood glucose, pancreatic alpha-cells release glucagon. The binding of glucagon to its receptor results in increased cAMP synthesis, and Protein Kinase A (PKA) activation.
Pathway 2. PKA mediated phosphorylation:PKA phosphorylates key enzymes, e.g., 6-Phosphofructo-2-kinase /Fructose-2,6-bisphosphatase (PF2K-Pase) at serine 36, and regulatory proteins, e.g., Carbohydrate Response Element Binding Protein (ChREBP) at serine 196 and threonine 666.
Insulin mediated responses to high blood glucose will be annotated in future versions of Reactome. In brief, the binding of insulin to its receptor leads to increased protein phosphatase activity and to hydrolysis of cAMP by cAMP phosphodiesterase. These events counteract the regulatory effects of glucagon.
Pathway 3: Insulin stimulates increased synthesis of Xylulose-5-phosphate (Xy-5-P). Activation of the insulin receptor results indirectly in increased Xy-5-P synthesis from Glyceraldehyde-3-phosphate and Fructose-6-phosphate. Xy-5-P, a metabolite of the pentose phosphate pathway, stimulates protein phosphatase PP2A.
Pathway 4: AMP Kinase (AMPK) mediated response to high AMP:ATP ratio: In response to diet with high fat content or low energy levels, the cytosolic AMP:ATP ratio is increased. AMP triggers a complicated cascade of events. In this module we have annotated only the phosphorylation of ChREBP by AMPK at serine 568, which inactivates this transcription factor.
Pathway 5: Dephosphorylation of key metabolic factors by PP2A: Xy-5-P activated PP2A efficiently dephosphorylates phosphorylated PF2K-Pase resulting in the higher output of F-2,6-P2 that enhances PFK activity in the glycolytic pathway. PP2A also dephosphorylates (and thus activates) cytosolic and nuclear ChREBP.
Pathway 6: Transcriptional activation of metabolic genes by ChREBP: Dephosphorylated ChREBP activates the transcription of genes involved in glucose metabolism such as pyruvate kinase, and lipogenic genes such as acetyl-CoA carboxylase, fatty acid synthetase, acyl CoA synthase and glycerol phosphate acyl transferase.
The illustration below summarizes this network of events. Black lines are metabolic reactions, red lines are negative regulatory events, and green lines are positive regulatory events (figure reused with permission from Veech (2003) - Copyright (2003) National Academy of Sciences, U.S.A.). View original pathway at:Reactome.
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- Dillon JS, Tanizawa Y, Wheeler MB, Leng XH, Ligon BB, Rabin DU, Yoo-Warren H, Permutt MA, Boyd AE.; ''Cloning and functional expression of the human glucagon-like peptide-1 (GLP-1) receptor.''; PubMed Europe PMC Scholia
- Hardie DG.; ''The AMP-activated protein kinase pathway--new players upstream and downstream.''; PubMed Europe PMC Scholia
- Pessin JE, Bell GI.; ''Mammalian facilitative glucose transporter family: structure and molecular regulation.''; PubMed Europe PMC Scholia
- Tao N, Wagner SJ, Lublin DM.; ''CD36 is palmitoylated on both N- and C-terminal cytoplasmic tails.''; PubMed Europe PMC Scholia
- Gromada J, Rorsman P.; ''Molecular mechanism underlying glucagon-like peptide 1 induced calcium mobilization from internal stores in insulin-secreting beta TC3 cells.''; PubMed Europe PMC Scholia
- Seino S, Chen L, Seino M, Blondel O, Takeda J, Johnson JH, Bell GI.; ''Cloning of the alpha 1 subunit of a voltage-dependent calcium channel expressed in pancreatic beta cells.''; PubMed Europe PMC Scholia
- Rall T, Harris BA.; ''Identification of the lesion in the stimulatory GTP-binding protein of the uncoupled S49 lymphoma.''; PubMed Europe PMC Scholia
- Ansari IH, Longacre MJ, Stoker SW, Kendrick MA, O'Neill LM, Zitur LJ, Fernandez LA, Ntambi JM, MacDonald MJ.; ''Characterization of Acyl-CoA synthetase isoforms in pancreatic beta cells: Gene silencing shows participation of ACSL3 and ACSL4 in insulin secretion.''; PubMed Europe PMC Scholia
- Pinney SE, MacMullen C, Becker S, Lin YW, Hanna C, Thornton P, Ganguly A, Shyng SL, Stanley CA.; ''Clinical characteristics and biochemical mechanisms of congenital hyperinsulinism associated with dominant KATP channel mutations.''; PubMed Europe PMC Scholia
- Morita H, Yano Y, Niswender KD, May JM, Whitesell RR, Wu L, Printz RL, Granner DK, Magnuson MA, Powers AC.; ''Coexpression of glucose transporters and glucokinase in Xenopus oocytes indicates that both glucose transport and phosphorylation determine glucose utilization.''; PubMed Europe PMC Scholia
- Bayewitch ML, Avidor-Reiss T, Levy R, Pfeuffer T, Nevo I, Simonds WF, Vogel Z.; ''Inhibition of adenylyl cyclase isoforms V and VI by various Gbetagamma subunits.''; PubMed Europe PMC Scholia
- Fujise A, Mizuno K, Ueda Y, Osada S, Hirai S, Takayanagi A, Shimizu N, Owada MK, Nakajima H, Ohno S.; ''Specificity of the high affinity interaction of protein kinase C with a physiological substrate, myristoylated alanine-rich protein kinase C substrate.''; PubMed Europe PMC Scholia
- Offermanns S, Wieland T, Homann D, Sandmann J, Bombien E, Spicher K, Schultz G, Jakobs KH.; ''Transfected muscarinic acetylcholine receptors selectively couple to Gi-type G proteins and Gq/11.''; PubMed Europe PMC Scholia
- Macfarlane WM, O'Brien RE, Barnes PD, Shepherd RM, Cosgrove KE, Lindley KJ, Aynsley-Green A, James RF, Docherty K, Dunne MJ.; ''Sulfonylurea receptor 1 and Kir6.2 expression in the novel human insulin-secreting cell line NES2Y.''; PubMed Europe PMC Scholia
- Gibson SK, Gilman AG.; ''Gialpha and Gbeta subunits both define selectivity of G protein activation by alpha2-adrenergic receptors.''; PubMed Europe PMC Scholia
- Leifert WR, Aloia AL, Bucco O, McMurchie EJ.; ''GPCR-induced dissociation of G-protein subunits in early stage signal transduction.''; PubMed Europe PMC Scholia
- Miki T, Nagashima K, Seino S.; ''The structure and function of the ATP-sensitive K+ channel in insulin-secreting pancreatic beta-cells.''; PubMed Europe PMC Scholia
- Nauert JB, Rigas JD, Lester LB.; ''Identification of an IQGAP1/AKAP79 complex in beta-cells.''; PubMed Europe PMC Scholia
- Hollins B, Kuravi S, Digby GJ, Lambert NA.; ''The c-terminus of GRK3 indicates rapid dissociation of G protein heterotrimers.''; PubMed Europe PMC Scholia
- Delmeire D, Flamez D, Hinke SA, Cali JJ, Pipeleers D, Schuit F.; ''Type VIII adenylyl cyclase in rat beta cells: coincidence signal detector/generator for glucose and GLP-1.''; PubMed Europe PMC Scholia
- Yan L, Figueroa DJ, Austin CP, Liu Y, Bugianesi RM, Slaughter RS, Kaczorowski GJ, Kohler MG.; ''Expression of voltage-gated potassium channels in human and rhesus pancreatic islets.''; PubMed Europe PMC Scholia
- Tomita T, Masuzaki H, Noguchi M, Iwakura H, Fujikura J, Tanaka T, Ebihara K, Kawamura J, Komoto I, Kawaguchi Y, Fujimoto K, Doi R, Shimada Y, Hosoda K, Imamura M, Nakao K.; ''GPR40 gene expression in human pancreas and insulinoma.''; PubMed Europe PMC Scholia
- Hruz PW, Mueckler MM.; ''Structural analysis of the GLUT1 facilitative glucose transporter (review).''; PubMed Europe PMC Scholia
- Gullingsrud J, Kim C, Taylor SS, McCammon JA.; ''Dynamic binding of PKA regulatory subunit RI alpha.''; PubMed Europe PMC Scholia
- Girard CA, Shimomura K, Proks P, Absalom N, Castano L, Perez de Nanclares G, Ashcroft FM.; ''Functional analysis of six Kir6.2 (KCNJ11) mutations causing neonatal diabetes.''; PubMed Europe PMC Scholia
- Smrcka AV, Hepler JR, Brown KO, Sternweis PC.; ''Regulation of polyphosphoinositide-specific phospholipase C activity by purified Gq.''; PubMed Europe PMC Scholia
- Bazarsuren A, Grauschopf U, Wozny M, Reusch D, Hoffmann E, Schaefer W, Panzner S, Rudolph R.; ''In vitro folding, functional characterization, and disulfide pattern of the extracellular domain of human GLP-1 receptor.''; PubMed Europe PMC Scholia
- Lacey RJ, Chan SL, Cable HC, James RF, Perrett CW, Scarpello JH, Morgan NG.; ''Expression of alpha 2- and beta-adrenoceptor subtypes in human islets of Langerhans.''; PubMed Europe PMC Scholia
- Akgoz M, Kalyanaraman V, Gautam N.; ''Receptor-mediated reversible translocation of the G protein betagamma complex from the plasma membrane to the Golgi complex.''; PubMed Europe PMC Scholia
- Henquin JC.; ''Triggering and amplifying pathways of regulation of insulin secretion by glucose.''; PubMed Europe PMC Scholia
- Gilon P, Henquin JC.; ''Mechanisms and physiological significance of the cholinergic control of pancreatic beta-cell function.''; PubMed Europe PMC Scholia
- Ellard S, Flanagan SE, Girard CA, Patch AM, Harries LW, Parrish A, Edghill EL, Mackay DJ, Proks P, Shimomura K, Haberland H, Carson DJ, Shield JP, Hattersley AT, Ashcroft FM.; ''Permanent neonatal diabetes caused by dominant, recessive, or compound heterozygous SUR1 mutations with opposite functional effects.''; PubMed Europe PMC Scholia
- Underwood CR, Garibay P, Knudsen LB, Hastrup S, Peters GH, Rudolph R, Reedtz-Runge S.; ''Crystal structure of glucagon-like peptide-1 in complex with the extracellular domain of the glucagon-like peptide-1 receptor.''; PubMed Europe PMC Scholia
- Grabsch H, Pereverzev A, Weiergräber M, Schramm M, Henry M, Vajna R, Beattie RE, Volsen SG, Klöckner U, Hescheler J, Schneider T.; ''Immunohistochemical detection of alpha1E voltage-gated Ca(2+) channel isoforms in cerebellum, INS-1 cells, and neuroendocrine cells of the digestive system.''; PubMed Europe PMC Scholia
- Cheung PC, Salt IP, Davies SP, Hardie DG, Carling D.; ''Characterization of AMP-activated protein kinase gamma-subunit isoforms and their role in AMP binding.''; PubMed Europe PMC Scholia
- Briscoe CP, Tadayyon M, Andrews JL, Benson WG, Chambers JK, Eilert MM, Ellis C, Elshourbagy NA, Goetz AS, Minnick DT, Murdock PR, Sauls HR, Shabon U, Spinage LD, Strum JC, Szekeres PG, Tan KB, Way JM, Ignar DM, Wilson S, Muir AI.; ''The orphan G protein-coupled receptor GPR40 is activated by medium and long chain fatty acids.''; PubMed Europe PMC Scholia
- Lang J.; ''Molecular mechanisms and regulation of insulin exocytosis as a paradigm of endocrine secretion.''; PubMed Europe PMC Scholia
- Wang JJ, Martin PR, Singleton CK.; ''Aspartate 155 of human transketolase is essential for thiamine diphosphate-magnesium binding, and cofactor binding is required for dimer formation.''; PubMed Europe PMC Scholia
- Ma L, Tsatsos NG, Towle HC.; ''Direct role of ChREBP.Mlx in regulating hepatic glucose-responsive genes.''; PubMed Europe PMC Scholia
- Jayakumar A, Tai MH, Huang WY, al-Feel W, Hsu M, Abu-Elheiga L, Chirala SS, Wakil SJ.; ''Human fatty acid synthase: properties and molecular cloning.''; PubMed Europe PMC Scholia
- Prentki M, Madiraju SR.; ''Glycerolipid metabolism and signaling in health and disease.''; PubMed Europe PMC Scholia
- Yang SN, Berggren PO.; ''Beta-cell CaV channel regulation in physiology and pathophysiology.''; PubMed Europe PMC Scholia
- Mueckler M, Kruse M, Strube M, Riggs AC, Chiu KC, Permutt MA.; ''A mutation in the Glut2 glucose transporter gene of a diabetic patient abolishes transport activity.''; PubMed Europe PMC Scholia
- Jacobson DA, Philipson LH.; ''Action potentials and insulin secretion: new insights into the role of Kv channels.''; PubMed Europe PMC Scholia
- Dallas-Yang Q, Shen X, Strowski M, Brady E, Saperstein R, Gibson RE, Szalkowski D, Qureshi SA, Candelore MR, Fenyk-Melody JE, Parmee ER, Zhang BB, Jiang G.; ''Hepatic glucagon receptor binding and glucose-lowering in vivo by peptidyl and non-peptidyl glucagon receptor antagonists.''; PubMed Europe PMC Scholia
- Martin BR, Farndale RW, Wong SK.; ''The role of Gs in activation of adenylate cyclase.''; PubMed Europe PMC Scholia
- Gerber SH, Südhof TC.; ''Molecular determinants of regulated exocytosis.''; PubMed Europe PMC Scholia
- Wojcikiewicz RJ, Luo SG.; ''Phosphorylation of inositol 1,4,5-trisphosphate receptors by cAMP-dependent protein kinase. Type I, II, and III receptors are differentially susceptible to phosphorylation and are phosphorylated in intact cells.''; PubMed Europe PMC Scholia
- Holz GG, Leech CA, Heller RS, Castonguay M, Habener JF.; ''cAMP-dependent mobilization of intracellular Ca2+ stores by activation of ryanodine receptors in pancreatic beta-cells. A Ca2+ signaling system stimulated by the insulinotropic hormone glucagon-like peptide-1-(7-37).''; PubMed Europe PMC Scholia
- Neuwald AF.; ''Galpha Gbetagamma dissociation may be due to retraction of a buried lysine and disruption of an aromatic cluster by a GTP-sensing Arg Trp pair.''; PubMed Europe PMC Scholia
- Naylor RN, Greeley SA, Bell GI, Philipson LH.; ''Genetics and pathophysiology of neonatal diabetes mellitus.''; PubMed Europe PMC Scholia
- Thomsen J, Kristiansen K, Brunfeldt K, Sundby F.; ''The amino acid sequence of human glucagon.''; PubMed Europe PMC Scholia
- Bratanova-Tochkova TK, Cheng H, Daniel S, Gunawardana S, Liu YJ, Mulvaney-Musa J, Schermerhorn T, Straub SG, Yajima H, Sharp GW.; ''Triggering and augmentation mechanisms, granule pools, and biphasic insulin secretion.''; PubMed Europe PMC Scholia
- Nagasumi K, Esaki R, Iwachidow K, Yasuhara Y, Ogi K, Tanaka H, Nakata M, Yano T, Shimakawa K, Taketomi S, Takeuchi K, Odaka H, Kaisho Y.; ''Overexpression of GPR40 in pancreatic beta-cells augments glucose-stimulated insulin secretion and improves glucose tolerance in normal and diabetic mice.''; PubMed Europe PMC Scholia
- Sakiyama H, Wynn RM, Lee WR, Fukasawa M, Mizuguchi H, Gardner KH, Repa JJ, Uyeda K.; ''Regulation of nuclear import/export of carbohydrate response element-binding protein (ChREBP): interaction of an alpha-helix of ChREBP with the 14-3-3 proteins and regulation by phosphorylation.''; PubMed Europe PMC Scholia
- Pilkis SJ, el-Maghrabi MR, Claus TH.; ''Hormonal regulation of hepatic gluconeogenesis and glycolysis.''; PubMed Europe PMC Scholia
- Raybaud A, Baspinar EE, Dionne F, Dodier Y, Sauvé R, Parent L.; ''The role of distal S6 hydrophobic residues in the voltage-dependent gating of CaV2.3 channels.''; PubMed Europe PMC Scholia
- Dalman HM, Neubig RR.; ''Two peptides from the alpha 2A-adrenergic receptor alter receptor G protein coupling by distinct mechanisms.''; PubMed Europe PMC Scholia
- Gautam D, Han SJ, Duttaroy A, Mears D, Hamdan FF, Li JH, Cui Y, Jeon J, Wess J.; ''Role of the M3 muscarinic acetylcholine receptor in beta-cell function and glucose homeostasis.''; PubMed Europe PMC Scholia
- Leech CA, Castonguay MA, Habener JF.; ''Expression of adenylyl cyclase subtypes in pancreatic beta-cells.''; PubMed Europe PMC Scholia
- Waki H, Yamauchi T, Kamon J, Ito Y, Uchida S, Kita S, Hara K, Hada Y, Vasseur F, Froguel P, Kimura S, Nagai R, Kadowaki T.; ''Impaired multimerization of human adiponectin mutants associated with diabetes. Molecular structure and multimer formation of adiponectin.''; PubMed Europe PMC Scholia
- Winzell MS, Ahrén B.; ''G-protein-coupled receptors and islet function-implications for treatment of type 2 diabetes.''; PubMed Europe PMC Scholia
- Tanimura A, Nezu A, Morita T, Hashimoto N, Tojyo Y.; ''Interplay between calcium, diacylglycerol, and phosphorylation in the spatial and temporal regulation of PKCalpha-GFP.''; PubMed Europe PMC Scholia
- Hibino H, Inanobe A, Furutani K, Murakami S, Findlay I, Kurachi Y.; ''Inwardly rectifying potassium channels: their structure, function, and physiological roles.''; PubMed Europe PMC Scholia
- Rutter GA, Hill EV.; ''Insulin vesicle release: walk, kiss, pause ... then run.''; PubMed Europe PMC Scholia
- Holz GG, Kang G, Harbeck M, Roe MW, Chepurny OG.; ''Cell physiology of cAMP sensor Epac.''; PubMed Europe PMC Scholia
- Fujimoto K, Shibasaki T, Yokoi N, Kashima Y, Matsumoto M, Sasaki T, Tajima N, Iwanaga T, Seino S.; ''Piccolo, a Ca2+ sensor in pancreatic beta-cells. Involvement of cAMP-GEFII.Rim2. Piccolo complex in cAMP-dependent exocytosis.''; PubMed Europe PMC Scholia
- Lacey RJ, Cable HC, James RF, London NJ, Scarpello JH, Morgan NG.; ''Concentration-dependent effects of adrenaline on the profile of insulin secretion from isolated human islets of Langerhans.''; PubMed Europe PMC Scholia
- Thorens B.; ''GLUT2 in pancreatic and extra-pancreatic gluco-detection (review).''; PubMed Europe PMC Scholia
- Babenko AP, Gonzalez G, Bryan J.; ''Two regions of sulfonylurea receptor specify the spontaneous bursting and ATP inhibition of KATP channel isoforms.''; PubMed Europe PMC Scholia
- Peltonen JM, Pihlavisto M, Scheinin M.; ''Subtype-specific stimulation of [35S]GTPgammaS binding by recombinant alpha2-adrenoceptors.''; PubMed Europe PMC Scholia
- Thorell S, Gergely P, Banki K, Perl A, Schneider G.; ''The three-dimensional structure of human transaldolase.''; PubMed Europe PMC Scholia
- Richardson CC, Hussain K, Jones PM, Persaud S, Löbner K, Boehm A, Clark A, Christie MR.; ''Low levels of glucose transporters and K+ATP channels in human pancreatic beta cells early in development.''; PubMed Europe PMC Scholia
- Hirasawa A, Hara T, Katsuma S, Adachi T, Tsujimoto G.; ''Free fatty acid receptors and drug discovery.''; PubMed Europe PMC Scholia
- Shapiro H, Shachar S, Sekler I, Hershfinkel M, Walker MD.; ''Role of GPR40 in fatty acid action on the beta cell line INS-1E.''; PubMed Europe PMC Scholia
- Yajima H, Komatsu M, Sato Y, Yamada S, Yamauchi K, Sharp GW, Aizawa T, Hashizume K.; ''Norepinephrine inhibits glucose-stimulated, Ca2+-independent insulin release independently from its action on adenylyl cyclase.''; PubMed Europe PMC Scholia
- Itoh Y, Kawamata Y, Harada M, Kobayashi M, Fujii R, Fukusumi S, Ogi K, Hosoya M, Tanaka Y, Uejima H, Tanaka H, Maruyama M, Satoh R, Okubo S, Kizawa H, Komatsu H, Matsumura F, Noguchi Y, Shinohara T, Hinuma S, Fujisawa Y, Fujino M.; ''Free fatty acids regulate insulin secretion from pancreatic beta cells through GPR40.''; PubMed Europe PMC Scholia
- Smith NJ, Stoddart LA, Devine NM, Jenkins L, Milligan G.; ''The action and mode of binding of thiazolidinedione ligands at free fatty acid receptor 1.''; PubMed Europe PMC Scholia
- Lok S, Kuijper JL, Jelinek LJ, Kramer JM, Whitmore TE, Sprecher CA, Mathewes S, Grant FJ, Biggs SH, Rosenberg GB.; ''The human glucagon receptor encoding gene: structure, cDNA sequence and chromosomal localization.''; PubMed Europe PMC Scholia
- Gromada J, Rorsman P, Dissing S, Wulff BS.; ''Stimulation of cloned human glucagon-like peptide 1 receptor expressed in HEK 293 cells induces cAMP-dependent activation of calcium-induced calcium release.''; PubMed Europe PMC Scholia
- Ostenson CG, Gaisano H, Sheu L, Tibell A, Bartfai T.; ''Impaired gene and protein expression of exocytotic soluble N-ethylmaleimide attachment protein receptor complex proteins in pancreatic islets of type 2 diabetic patients.''; PubMed Europe PMC Scholia
- Tesmer JJ, Sunahara RK, Gilman AG, Sprang SR.; ''Crystal structure of the catalytic domains of adenylyl cyclase in a complex with Gsalpha.GTPgammaS.''; PubMed Europe PMC Scholia
- Kurose H, Regan JW, Caron MG, Lefkowitz RJ.; ''Functional interactions of recombinant alpha 2 adrenergic receptor subtypes and G proteins in reconstituted phospholipid vesicles.''; PubMed Europe PMC Scholia
- Nobles M, Benians A, Tinker A.; ''Heterotrimeric G proteins precouple with G protein-coupled receptors in living cells.''; PubMed Europe PMC Scholia
- Banno Y, Yada Y, Nozawa Y.; ''Purification and characterization of membrane-bound phospholipase C specific for phosphoinositides from human platelets.''; PubMed Europe PMC Scholia
- Schnell S, Schaefer M, Schöfl C.; ''Free fatty acids increase cytosolic free calcium and stimulate insulin secretion from beta-cells through activation of GPR40.''; PubMed Europe PMC Scholia
- Runge S, Schimmer S, Oschmann J, Schiødt CB, Knudsen SM, Jeppesen CB, Madsen K, Lau J, Thøgersen H, Rudolph R.; ''Differential structural properties of GLP-1 and exendin-4 determine their relative affinity for the GLP-1 receptor N-terminal extracellular domain.''; PubMed Europe PMC Scholia
- Freitas Lima LC, Braga VA, do Socorro de França Silva M, Cruz JC, Sousa Santos SH, de Oliveira Monteiro MM, Balarini CM.; ''Adipokines, diabetes and atherosclerosis: an inflammatory association.''; PubMed Europe PMC Scholia
- Kang G, Leech CA, Chepurny OG, Coetzee WA, Holz GG.; ''Role of the cAMP sensor Epac as a determinant of KATP channel ATP sensitivity in human pancreatic beta-cells and rat INS-1 cells.''; PubMed Europe PMC Scholia
- Azpiazu I, Akgoz M, Kalyanaraman V, Gautam N.; ''G protein betagamma11 complex translocation is induced by Gi, Gq and Gs coupling receptors and is regulated by the alpha subunit type.''; PubMed Europe PMC Scholia
- Wu L, Fritz JD, Powers AC.; ''Different functional domains of GLUT2 glucose transporter are required for glucose affinity and substrate specificity.''; PubMed Europe PMC Scholia
- Kubota M, Wakamatsu K.; ''Peptide fragment of the m3 muscarinic acetylcholine receptor activates G(q) but not G(i2).''; PubMed Europe PMC Scholia
- Leech CA, Holz GG, Chepurny O, Habener JF.; ''Expression of cAMP-regulated guanine nucleotide exchange factors in pancreatic beta-cells.''; PubMed Europe PMC Scholia
- Noushmehr H, D'Amico E, Farilla L, Hui H, Wawrowsky KA, Mlynarski W, Doria A, Abumrad NA, Perfetti R.; ''Fatty acid translocase (FAT/CD36) is localized on insulin-containing granules in human pancreatic beta-cells and mediates fatty acid effects on insulin secretion.''; PubMed Europe PMC Scholia
- Lambert NA.; ''Dissociation of heterotrimeric g proteins in cells.''; PubMed Europe PMC Scholia
- Wiederkehr A, Wollheim CB.; ''Minireview: implication of mitochondria in insulin secretion and action.''; PubMed Europe PMC Scholia
- Del Guerra S, Bugliani M, D'Aleo V, Del Prato S, Boggi U, Mosca F, Filipponi F, Lupi R.; ''G-protein-coupled receptor 40 (GPR40) expression and its regulation in human pancreatic islets: the role of type 2 diabetes and fatty acids.''; PubMed Europe PMC Scholia
- Barg S, Eliasson L, Renström E, Rorsman P.; ''A subset of 50 secretory granules in close contact with L-type Ca2+ channels accounts for first-phase insulin secretion in mouse beta-cells.''; PubMed Europe PMC Scholia
- Havula E, Hietakangas V.; ''Glucose sensing by ChREBP/MondoA-Mlx transcription factors.''; PubMed Europe PMC Scholia
- Nolan CJ, Madiraju MS, Delghingaro-Augusto V, Peyot ML, Prentki M.; ''Fatty acid signaling in the beta-cell and insulin secretion.''; PubMed Europe PMC Scholia
- Eason MG, Liggett SB.; ''Chimeric mutagenesis of putative G-protein coupling domains of the alpha2A-adrenergic receptor. Localization of two redundant and fully competent gi coupling domains.''; PubMed Europe PMC Scholia
- Tsuboi T, da Silva Xavier G, Holz GG, Jouaville LS, Thomas AP, Rutter GA.; ''Glucagon-like peptide-1 mobilizes intracellular Ca2+ and stimulates mitochondrial ATP synthesis in pancreatic MIN6 beta-cells.''; PubMed Europe PMC Scholia
- Lin YW, MacMullen C, Ganguly A, Stanley CA, Shyng SL.; ''A novel KCNJ11 mutation associated with congenital hyperinsulinism reduces the intrinsic open probability of beta-cell ATP-sensitive potassium channels.''; PubMed Europe PMC Scholia
- Yamauchi T, Kamon J, Ito Y, Tsuchida A, Yokomizo T, Kita S, Sugiyama T, Miyagishi M, Hara K, Tsunoda M, Murakami K, Ohteki T, Uchida S, Takekawa S, Waki H, Tsuno NH, Shibata Y, Terauchi Y, Froguel P, Tobe K, Koyasu S, Taira K, Kitamura T, Shimizu T, Nagai R, Kadowaki T.; ''Cloning of adiponectin receptors that mediate antidiabetic metabolic effects.''; PubMed Europe PMC Scholia
- Latour MG, Alquier T, Oseid E, Tremblay C, Jetton TL, Luo J, Lin DC, Poitout V.; ''GPR40 is necessary but not sufficient for fatty acid stimulation of insulin secretion in vivo.''; PubMed Europe PMC Scholia
- Ma L, Robinson LN, Towle HC.; ''ChREBP*Mlx is the principal mediator of glucose-induced gene expression in the liver.''; PubMed Europe PMC Scholia
- Thorens B, Porret A, Bühler L, Deng SP, Morel P, Widmann C.; ''Cloning and functional expression of the human islet GLP-1 receptor. Demonstration that exendin-4 is an agonist and exendin-(9-39) an antagonist of the receptor.''; PubMed Europe PMC Scholia
- Colville CA, Seatter MJ, Jess TJ, Gould GW, Thomas HM.; ''Kinetic analysis of the liver-type (GLUT2) and brain-type (GLUT3) glucose transporters in Xenopus oocytes: substrate specificities and effects of transport inhibitors.''; PubMed Europe PMC Scholia
- Banki K, Halladay D, Perl A.; ''Cloning and expression of the human gene for transaldolase. A novel highly repetitive element constitutes an integral part of the coding sequence.''; PubMed Europe PMC Scholia
- Kang G, Joseph JW, Chepurny OG, Monaco M, Wheeler MB, Bos JL, Schwede F, Genieser HG, Holz GG.; ''Epac-selective cAMP analog 8-pCPT-2'-O-Me-cAMP as a stimulus for Ca2+-induced Ca2+ release and exocytosis in pancreatic beta-cells.''; PubMed Europe PMC Scholia
- Verghese GM, Johnson JD, Vasulka C, Haupt DM, Stumpo DJ, Blackshear PJ.; ''Protein kinase C-mediated phosphorylation and calmodulin binding of recombinant myristoylated alanine-rich C kinase substrate (MARCKS) and MARCKS-related protein.''; PubMed Europe PMC Scholia
- Sher E, Giovannini F, Codignola A, Passafaro M, Giorgi-Rossi P, Volsen S, Craig P, Davalli A, Carrera P.; ''Voltage-operated calcium channel heterogeneity in pancreatic beta cells: physiopathological implications.''; PubMed Europe PMC Scholia
- Lang J, Nishimoto I, Okamoto T, Regazzi R, Kiraly C, Weller U, Wollheim CB.; ''Direct control of exocytosis by receptor-mediated activation of the heterotrimeric GTPases Gi and G(o) or by the expression of their active G alpha subunits.''; PubMed Europe PMC Scholia
- Dessauer CW, Chen-Goodspeed M, Chen J.; ''Mechanism of Galpha i-mediated inhibition of type V adenylyl cyclase.''; PubMed Europe PMC Scholia
- Bavec A, Licar A.; ''Functional characterization of N-terminally GFP-tagged GLP-1 receptor.''; PubMed Europe PMC Scholia
- Sharp GW.; ''Mechanisms of inhibition of insulin release.''; PubMed Europe PMC Scholia
- McIntire WE.; ''Structural determinants involved in the formation and activation of G protein betagamma dimers.''; PubMed Europe PMC Scholia
- Gao Z, Young RA, Trucco MM, Greene SR, Hewlett EL, Matschinsky FM, Wolf BA.; ''Protein kinase A translocation and insulin secretion in pancreatic beta-cells: studies with adenylate cyclase toxin from Bordetella pertussis.''; PubMed Europe PMC Scholia
- Proks P, Arnold AL, Bruining J, Girard C, Flanagan SE, Larkin B, Colclough K, Hattersley AT, Ashcroft FM, Ellard S.; ''A heterozygous activating mutation in the sulphonylurea receptor SUR1 (ABCC8) causes neonatal diabetes.''; PubMed Europe PMC Scholia
- Luvisetto S, Fellin T, Spagnolo M, Hivert B, Brust PF, Harpold MM, Stauderman KA, Williams ME, Pietrobon D.; ''Modal gating of human CaV2.1 (P/Q-type) calcium channels: I. The slow and the fast gating modes and their modulation by beta subunits.''; PubMed Europe PMC Scholia
- MacDonald PE, Wang G, Tsuk S, Dodo C, Kang Y, Tang L, Wheeler MB, Cattral MS, Lakey JR, Salapatek AM, Lotan I, Gaisano HY.; ''Synaptosome-associated protein of 25 kilodaltons modulates Kv2.1 voltage-dependent K(+) channels in neuroendocrine islet beta-cells through an interaction with the channel N terminus.''; PubMed Europe PMC Scholia
- Vignali S, Leiss V, Karl R, Hofmann F, Welling A.; ''Characterization of voltage-dependent sodium and calcium channels in mouse pancreatic A- and B-cells.''; PubMed Europe PMC Scholia
- Peterhoff M, Sieg A, Brede M, Chao CM, Hein L, Ullrich S.; ''Inhibition of insulin secretion via distinct signaling pathways in alpha2-adrenoceptor knockout mice.''; PubMed Europe PMC Scholia
- Digby GJ, Lober RM, Sethi PR, Lambert NA.; ''Some G protein heterotrimers physically dissociate in living cells.''; PubMed Europe PMC Scholia
- Babenko AP, Polak M, Cavé H, Busiah K, Czernichow P, Scharfmann R, Bryan J, Aguilar-Bryan L, Vaxillaire M, Froguel P.; ''Activating mutations in the ABCC8 gene in neonatal diabetes mellitus.''; PubMed Europe PMC Scholia
- Ferrer J, Benito C, Gomis R.; ''Pancreatic islet GLUT2 glucose transporter mRNA and protein expression in humans with and without NIDDM.''; PubMed Europe PMC Scholia
- Seino S, Iwanaga T, Nagashima K, Miki T.; ''Diverse roles of K(ATP) channels learned from Kir6.2 genetically engineered mice.''; PubMed Europe PMC Scholia
- Remaury A, Larrouy D, Daviaud D, Rouot B, Paris H.; ''Coupling of the alpha 2-adrenergic receptor to the inhibitory G-protein Gi and adenylate cyclase in HT29 cells.''; PubMed Europe PMC Scholia
- Veech RL.; ''A humble hexose monophosphate pathway metabolite regulates short- and long-term control of lipogenesis.''; PubMed Europe PMC Scholia
- Arbuckle MI, Kane S, Porter LM, Seatter MJ, Gould GW.; ''Structure-function analysis of liver-type (GLUT2) and brain-type (GLUT3) glucose transporters: expression of chimeric transporters in Xenopus oocytes suggests an important role for putative transmembrane helix 7 in determining substrate selectivity.''; PubMed Europe PMC Scholia
- Nakayama T, Penheiter AR, Penheiter SG, Chini EN, Thompson M, Warner DO, Jones KA.; ''Differential effects of volatile anesthetics on M3 muscarinic receptor coupling to the Galphaq heterotrimeric G protein.''; PubMed Europe PMC Scholia
- Kang G, Chepurny OG, Malester B, Rindler MJ, Rehmann H, Bos JL, Schwede F, Coetzee WA, Holz GG.; ''cAMP sensor Epac as a determinant of ATP-sensitive potassium channel activity in human pancreatic beta cells and rat INS-1 cells.''; PubMed Europe PMC Scholia
- Siu FY, He M, de Graaf C, Han GW, Yang D, Zhang Z, Zhou C, Xu Q, Wacker D, Joseph JS, Liu W, Lau J, Cherezov V, Katritch V, Wang MW, Stevens RC.; ''Structure of the human glucagon class B G-protein-coupled receptor.''; PubMed Europe PMC Scholia
- Ross D, Joyner WL.; ''Resting distribution and stimulated translocation of protein kinase C isoforms alpha, epsilon and zeta in response to bradykinin and TNF in human endothelial cells.''; PubMed Europe PMC Scholia
- Tesmer VM, Kawano T, Shankaranarayanan A, Kozasa T, Tesmer JJ.; ''Snapshot of activated G proteins at the membrane: the Galphaq-GRK2-Gbetagamma complex.''; PubMed Europe PMC Scholia
- Fujiwara K, Maekawa F, Yada T.; ''Oleic acid interacts with GPR40 to induce Ca2+ signaling in rat islet beta-cells: mediation by PLC and L-type Ca2+ channel and link to insulin release.''; PubMed Europe PMC Scholia
- Gromada J, Brock B, Schmitz O, Rorsman P.; ''Glucagon-like peptide-1: regulation of insulin secretion and therapeutic potential.''; PubMed Europe PMC Scholia
- Kim SJ, Choi WS, Han JS, Warnock G, Fedida D, McIntosh CH.; ''A novel mechanism for the suppression of a voltage-gated potassium channel by glucose-dependent insulinotropic polypeptide: protein kinase A-dependent endocytosis.''; PubMed Europe PMC Scholia
- De Vos A, Heimberg H, Quartier E, Huypens P, Bouwens L, Pipeleers D, Schuit F.; ''Human and rat beta cells differ in glucose transporter but not in glucokinase gene expression.''; PubMed Europe PMC Scholia
- Tsuboi T, Rutter GA.; ''Insulin secretion by 'kiss-and-run' exocytosis in clonal pancreatic islet beta-cells.''; PubMed Europe PMC Scholia
- Cummins MM, O'Mullane LM, Barden JA, Cook DI, Poronnik P.; ''Antisense co-suppression of G(alpha)(q) and G(alpha)(11) demonstrates that both isoforms mediate M(3)-receptor-activated Ca(2+) signalling in intact epithelial cells.''; PubMed Europe PMC Scholia
- Calle R, Ganesan S, Smallwood JI, Rasmussen H.; ''Glucose-induced phosphorylation of myristoylated alanine-rich C kinase substrate (MARCKS) in isolated rat pancreatic islets.''; PubMed Europe PMC Scholia
- Henquin JC, Ishiyama N, Nenquin M, Ravier MA, Jonas JC.; ''Signals and pools underlying biphasic insulin secretion.''; PubMed Europe PMC Scholia
- Yamamoto H, Matsumura T, Kugiyama K, Oishi Y, Ogata N, Yasue H, Miyamoto E.; ''The antibody specific for myristoylated alanine-rich C kinase substrate phosphorylated by protein kinase C: activation of protein kinase C in smooth muscle cells in human coronary arteries.''; PubMed Europe PMC Scholia
- Runge S, Thøgersen H, Madsen K, Lau J, Rudolph R.; ''Crystal structure of the ligand-bound glucagon-like peptide-1 receptor extracellular domain.''; PubMed Europe PMC Scholia
- Trümper J, Ross D, Jahr H, Brendel MD, Göke R, Hörsch D.; ''The Rap-B-Raf signalling pathway is activated by glucose and glucagon-like peptide-1 in human islet cells.''; PubMed Europe PMC Scholia
- Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M.; ''Global, in vivo, and site-specific phosphorylation dynamics in signaling networks.''; PubMed Europe PMC Scholia
- Tarasov AI, Nicolson TJ, Riveline JP, Taneja TK, Baldwin SA, Baldwin JM, Charpentier G, Gautier JF, Froguel P, Vaxillaire M, Rutter GA.; ''A rare mutation in ABCC8/SUR1 leading to altered ATP-sensitive K+ channel activity and beta-cell glucose sensing is associated with type 2 diabetes in adults.''; PubMed Europe PMC Scholia
- Orskov C, Rabenhøj L, Wettergren A, Kofod H, Holst JJ.; ''Tissue and plasma concentrations of amidated and glycine-extended glucagon-like peptide I in humans.''; PubMed Europe PMC Scholia
- MacDonald PE, El-Kholy W, Riedel MJ, Salapatek AM, Light PE, Wheeler MB.; ''The multiple actions of GLP-1 on the process of glucose-stimulated insulin secretion.''; PubMed Europe PMC Scholia
- Cheng H, Straub SG, Sharp GW.; ''Protein acylation in the inhibition of insulin secretion by norepinephrine, somatostatin, galanin, and PGE2.''; PubMed Europe PMC Scholia
- Wittpoth C, Scholich K, Yigzaw Y, Stringfield TM, Patel TB.; ''Regions on adenylyl cyclase that are necessary for inhibition of activity by beta gamma and G(ialpha) subunits of heterotrimeric G proteins.''; PubMed Europe PMC Scholia
- Barg S, Rorsman P.; ''Insulin secretion: a high-affinity Ca2+ sensor after all?''; PubMed Europe PMC Scholia
- Verhoeven NM, Huck JH, Roos B, Struys EA, Salomons GS, Douwes AC, van der Knaap MS, Jakobs C.; ''Transaldolase deficiency: liver cirrhosis associated with a new inborn error in the pentose phosphate pathway.''; PubMed Europe PMC Scholia
- Zhao Y, Fang Q, Straub SG, Sharp GW.; ''Both G i and G o heterotrimeric G proteins are required to exert the full effect of norepinephrine on the beta-cell K ATP channel.''; PubMed Europe PMC Scholia
- Yang SN, Berggren PO.; ''The role of voltage-gated calcium channels in pancreatic beta-cell physiology and pathophysiology.''; PubMed Europe PMC Scholia
- Ma L, Sham YY, Walters KJ, Towle HC.; ''A critical role for the loop region of the basic helix-loop-helix/leucine zipper protein Mlx in DNA binding and glucose-regulated transcription.''; PubMed Europe PMC Scholia
- Jiang G, Zhang BB.; ''Glucagon and regulation of glucose metabolism.''; PubMed Europe PMC Scholia
- Kotarsky K, Nilsson NE, Flodgren E, Owman C, Olde B.; ''A human cell surface receptor activated by free fatty acids and thiazolidinedione drugs.''; PubMed Europe PMC Scholia
- Hamming KS, Soliman D, Matemisz LC, Niazi O, Lang Y, Gloyn AL, Light PE.; ''Coexpression of the type 2 diabetes susceptibility gene variants KCNJ11 E23K and ABCC8 S1369A alter the ATP and sulfonylurea sensitivities of the ATP-sensitive K(+) channel.''; PubMed Europe PMC Scholia
- Gautam D, Han SJ, Hamdan FF, Jeon J, Li B, Li JH, Cui Y, Mears D, Lu H, Deng C, Heard T, Wess J.; ''A critical role for beta cell M3 muscarinic acetylcholine receptors in regulating insulin release and blood glucose homeostasis in vivo.''; PubMed Europe PMC Scholia
- Doyle ME, Egan JM.; ''Mechanisms of action of glucagon-like peptide 1 in the pancreas.''; PubMed Europe PMC Scholia
History
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External references
DataNodes
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Name | Type | Database reference | Comment |
---|---|---|---|
2xHC-INS(25-54) | Protein | P01308 (Uniprot-TrEMBL) | |
4xHC-INS(90-110) | Protein | P01308 (Uniprot-TrEMBL) | |
6xInsulin:2xZn2+:Ca2+ (docked granule) | Complex | R-HSA-386977 (Reactome) | |
ABCC8 | Protein | Q09428 (Uniprot-TrEMBL) | |
ACACB | Protein | O00763 (Uniprot-TrEMBL) | |
ACC | Complex | R-HSA-200563 (Reactome) | |
ACLY | Protein | P53396 (Uniprot-TrEMBL) | |
ADCY1 | Protein | Q08828 (Uniprot-TrEMBL) | |
ADCY2 | Protein | Q08462 (Uniprot-TrEMBL) | |
ADCY3 | Protein | O60266 (Uniprot-TrEMBL) | |
ADCY4 | Protein | Q8NFM4 (Uniprot-TrEMBL) | |
ADCY5 | Protein | O95622 (Uniprot-TrEMBL) | |
ADCY5,6,8:G-alpha(s):GTP | Complex | R-HSA-422306 (Reactome) | |
ADCY6 | Protein | O43306 (Uniprot-TrEMBL) | |
ADCY7 | Protein | P51828 (Uniprot-TrEMBL) | |
ADCY8 | Protein | P40145 (Uniprot-TrEMBL) | |
ADCY9 | Protein | O60503 (Uniprot-TrEMBL) | |
ADP | Metabolite | CHEBI:16761 (ChEBI) | |
ADP | Metabolite | CHEBI:16761 (ChEBI) | |
ADR | Metabolite | CHEBI:28918 (ChEBI) | |
ADR, NAd | Complex | R-HSA-R-ALL-400049 (Reactome) | |
ADRA2A | Protein | P08913 (Uniprot-TrEMBL) | |
ADRA2A,C:ADR,NAd | Complex | R-HSA-400090 (Reactome) | |
ADRA2A,C | Complex | R-HSA-400086 (Reactome) | |
ADRA2C | Protein | P18825 (Uniprot-TrEMBL) | |
AGPAT1 | Protein | Q99943 (Uniprot-TrEMBL) | |
AHCYL1 | Protein | O43865 (Uniprot-TrEMBL) | |
AHCYL1:NAD+:ITPR1:I(1,4,5)P3 tetramer | Complex | R-HSA-5226920 (Reactome) | |
AKAP5 | Protein | P24588 (Uniprot-TrEMBL) | |
AMP | Metabolite | CHEBI:16027 (ChEBI) | |
AMP | Metabolite | CHEBI:16027 (ChEBI) | |
AMPK heterotrimer:AMP | Complex | R-HSA-163747 (Reactome) | |
AMPK heterotrimer (inactive) | Complex | R-HSA-163679 (Reactome) | |
ARL2 | Protein | P36404 (Uniprot-TrEMBL) | |
ARL2:GTP:ARL2BP:SLC25A4 | Complex | R-HSA-5250205 (Reactome) | |
ARL2:GTP:ARL2BP | Complex | R-HSA-5250201 (Reactome) | |
ARL2:GTP:ARL2BP | Complex | R-HSA-5250221 (Reactome) | |
ARL2:GTP | Complex | R-HSA-5250197 (Reactome) | |
ARL2BP | Protein | Q9Y2Y0 (Uniprot-TrEMBL) | |
ARL2BP | Protein | Q9Y2Y0 (Uniprot-TrEMBL) | |
ATP | Metabolite | CHEBI:15422 (ChEBI) | |
ATP | Metabolite | CHEBI:15422 (ChEBI) | |
AcCho | Metabolite | CHEBI:15355 (ChEBI) | |
AcCho | Metabolite | CHEBI:15355 (ChEBI) | |
Activated AMPK heterotrimer | Complex | R-HSA-163736 (Reactome) | |
Adenylate Cyclase V or VI | Complex | R-HSA-446432 (Reactome) | |
Adenylate cyclase (Mg2+ cofactor) | Complex | R-HSA-170665 (Reactome) | |
Adenylate cyclase
type V or VI: G-protein beta gamma Complex | Complex | R-HSA-400038 (Reactome) | |
Adenylyl cyclase
(pancreatic beta cell) | Complex | R-HSA-446658 (Reactome) | |
ArgN-GCG(98-127) | Protein | P01275 (Uniprot-TrEMBL) | The amide group at the C-terminus is not necessary for biological activity. |
Btn-ACACA | Protein | Q13085 (Uniprot-TrEMBL) | |
CACNA1A | Protein | O00555 (Uniprot-TrEMBL) | |
CACNA1C | Protein | Q13936 (Uniprot-TrEMBL) | |
CACNA1D | Protein | Q01668 (Uniprot-TrEMBL) | |
CACNA1E | Protein | Q15878 (Uniprot-TrEMBL) | |
CACNA2D2(19-1150) | Protein | Q9NY47 (Uniprot-TrEMBL) | |
CACNB2 | Protein | Q08289 (Uniprot-TrEMBL) | |
CACNB3 | Protein | P54284 (Uniprot-TrEMBL) | |
CHRM3 | Protein | P20309 (Uniprot-TrEMBL) | |
CHRM3 | Protein | P20309 (Uniprot-TrEMBL) | |
Ca-channel (closed) | Complex | R-HSA-111877 (Reactome) | |
Ca-channel (open) | Complex | R-HSA-111873 (Reactome) | |
Ca2+ | Metabolite | CHEBI:29108 (ChEBI) | |
Ca2+ | Metabolite | CHEBI:29108 (ChEBI) | |
ChREBP:MLX | Complex | R-HSA-163700 (Reactome) | |
Core SNARE Complex | Complex | R-HSA-387383 (Reactome) | |
DAG | Metabolite | CHEBI:17815 (ChEBI) | |
DAG | CHEBI:17815 (ChEBI) | ||
DDCX | Metabolite | CHEBI:30805 (ChEBI) | |
E4P | Metabolite | CHEBI:16897 (ChEBI) | |
FASN | Protein | P49327 (Uniprot-TrEMBL) | |
FFAR1 | Protein | O14842 (Uniprot-TrEMBL) | |
FFAR1:fatty acid | Complex | R-HSA-400420 (Reactome) | The Free fatty acid receptor 1 (FFAR1 or GPR40) is located on pancreatic beta cells and binds to medium and long chain fatty acids (fatty acids having more than 12 carbon groups). FFAR1 is a G-protein coupled receptor that is coupled to Gq. |
FFAR1 | Protein | O14842 (Uniprot-TrEMBL) | |
Fatty acids | R-NUL-163730 (Reactome) | ||
Fru(6)P | Metabolite | CHEBI:15946 (ChEBI) | |
G-alpha(i,o):GDP:G beta:G gamma | Complex | R-HSA-400088 (Reactome) | |
G-alpha(i,o):GTP:G-beta:G-gamma | Complex | R-HSA-400031 (Reactome) | |
G-alpha(i,o):GTP | Complex | R-HSA-400076 (Reactome) | |
G-alpha(q) 11,14,15,Q:GTP | Complex | R-HSA-400008 (Reactome) | |
G-alpha(q)11,14,15,Q:G-beta:G-gamma | Complex | R-HSA-399987 (Reactome) | |
G-alpha(q)11,14,15,Q:GDP:G-beta:G-gamma | Complex | R-HSA-399992 (Reactome) | |
G-alpha(s):GTP:G-beta:G-gamma | Complex | R-HSA-422322 (Reactome) | |
G-beta:G-gamma (candidates) | Complex | R-HSA-400034 (Reactome) | |
G-beta:G-gamma dimer | Complex | R-HSA-164386 (Reactome) | |
G-beta:G-gamma | Complex | R-HSA-399993 (Reactome) | |
G-protein alpha (s):GTP | Complex | R-HSA-164358 (Reactome) | |
G-protein with G(s) alpha:GDP | Complex | R-HSA-164384 (Reactome) | |
GA3P | Metabolite | CHEBI:29052 (ChEBI) | |
GCGR | Protein | P47871 (Uniprot-TrEMBL) | |
GCGR | Protein | P47871 (Uniprot-TrEMBL) | |
GDP | Metabolite | CHEBI:17552 (ChEBI) | |
GDP | Metabolite | CHEBI:17552 (ChEBI) | |
GLP-1 (7-37) | Protein | P01275 (Uniprot-TrEMBL) | |
GLP-1:GLP-1R:Heterotrimeric G(s):GDP | Complex | R-HSA-422310 (Reactome) | |
GLP-1:GLP-1R:Heterotrimeric G(s):GTP | Complex | R-HSA-422311 (Reactome) | |
GLP-1R:Heterotrimeric G(s):GDP | Complex | R-HSA-422314 (Reactome) | |
GLP1R | Protein | P43220 (Uniprot-TrEMBL) | |
GLUT1,2 | Complex | R-HSA-500048 (Reactome) | Human pancreatic beta cells contain GLUT1 and GLUT2 transporters, with GLUT1 predominant. Rodent beta cells predominantly contain GLUT2, which may account for differences observed in the toxicity of streptozotocin. |
GNA11 | Protein | P29992 (Uniprot-TrEMBL) | |
GNA14 | Protein | O95837 (Uniprot-TrEMBL) | |
GNA15 | Protein | P30679 (Uniprot-TrEMBL) | |
GNAI1 | Protein | P63096 (Uniprot-TrEMBL) | |
GNAI2 | Protein | P04899 (Uniprot-TrEMBL) | |
GNAQ | Protein | P50148 (Uniprot-TrEMBL) | |
GNAS | Protein | P63092 (Uniprot-TrEMBL) | |
GNB1 | Protein | P62873 (Uniprot-TrEMBL) | |
GNB2 | Protein | P62879 (Uniprot-TrEMBL) | |
GNB3 | Protein | P16520 (Uniprot-TrEMBL) | |
GNB4 | Protein | Q9HAV0 (Uniprot-TrEMBL) | |
GNB5 | Protein | O14775 (Uniprot-TrEMBL) | |
GNG10 | Protein | P50151 (Uniprot-TrEMBL) | |
GNG11 | Protein | P61952 (Uniprot-TrEMBL) | |
GNG12 | Protein | Q9UBI6 (Uniprot-TrEMBL) | |
GNG13 | Protein | Q9P2W3 (Uniprot-TrEMBL) | |
GNG2 | Protein | P59768 (Uniprot-TrEMBL) | |
GNG3 | Protein | P63215 (Uniprot-TrEMBL) | |
GNG4 | Protein | P50150 (Uniprot-TrEMBL) | |
GNG5 | Protein | P63218 (Uniprot-TrEMBL) | |
GNG7 | Protein | O60262 (Uniprot-TrEMBL) | |
GNG8 | Protein | Q9UK08 (Uniprot-TrEMBL) | |
GNGT1 | Protein | P63211 (Uniprot-TrEMBL) | |
GNGT2 | Protein | O14610 (Uniprot-TrEMBL) | |
GTP | Metabolite | CHEBI:15996 (ChEBI) | |
GTP | Metabolite | CHEBI:15996 (ChEBI) | |
Glc | Metabolite | CHEBI:17925 (ChEBI) | |
Glucagon | Protein | P01275 (Uniprot-TrEMBL) | |
Glucagon:GCGR | Complex | R-HSA-163627 (Reactome) | |
Glucagon | Protein | P01275 (Uniprot-TrEMBL) | |
Gs-activated adenylate cyclase | Complex | R-HSA-163622 (Reactome) | |
Guanine nucleotide-binding protein beta subunit | R-HSA-114545 (Reactome) | ||
Guanine nucleotide-binding protein gamma subunit | R-HSA-114546 (Reactome) | ||
H2O | Metabolite | CHEBI:15377 (ChEBI) | |
I(1,4,5)P3 | Metabolite | CHEBI:16595 (ChEBI) | |
I(1,4,5)P3 | Metabolite | CHEBI:16595 (ChEBI) | |
INS(57-87) | Protein | P01308 (Uniprot-TrEMBL) | |
IP3 receptor homotetramer | Complex | R-HSA-169686 (Reactome) | |
IQGAP1 | Protein | P46940 (Uniprot-TrEMBL) | |
ITPR1 | Protein | Q14643 (Uniprot-TrEMBL) | |
ITPR2 | Protein | Q14571 (Uniprot-TrEMBL) | |
ITPR3 | Protein | Q14573 (Uniprot-TrEMBL) | |
ITPR:I(1,4,5)P3 tetramer | Complex | R-HSA-169696 (Reactome) | |
Inactive
PP2A-ABdeltaC complex | Complex | R-HSA-165992 (Reactome) | |
Insulin | Complex | R-HSA-74674 (Reactome) | |
KCNB1 | Protein | Q14721 (Uniprot-TrEMBL) | |
KCNC2 | Protein | Q96PR1 (Uniprot-TrEMBL) | |
KCNG2 | Protein | Q9UJ96 (Uniprot-TrEMBL) | |
KCNJ11 tetramer:ABCC8:Mg2+:ADP tetramer | Complex | R-HSA-265734 (Reactome) | |
KCNJ11 | Protein | Q14654 (Uniprot-TrEMBL) | |
KCNJ11:ATP
tetramer:ABCC8 tetramer | Complex | R-HSA-265746 (Reactome) | |
KCNS3 | Protein | Q9BQ31 (Uniprot-TrEMBL) | |
Ligands of FFAR1 (GPR40) | Complex | R-HSA-R-ALL-400427 (Reactome) | |
MARCKS | Protein | P29966 (Uniprot-TrEMBL) | |
MLX | Protein | Q9UH92 (Uniprot-TrEMBL) | |
MLXIPL | Protein | Q9NP71 (Uniprot-TrEMBL) | |
MLXIPL | Protein | Q9NP71 (Uniprot-TrEMBL) | |
MLX | Protein | Q9UH92 (Uniprot-TrEMBL) | |
Mg2+ | Metabolite | CHEBI:18420 (ChEBI) | |
Mg2+:ADP | Complex | R-HSA-R-ALL-6790050 (Reactome) | |
Muscarinic
Acetylcholine Receptor M3:Acetylcholine Complex | Complex | R-HSA-400013 (Reactome) | |
NAD+ | Metabolite | CHEBI:15846 (ChEBI) | |
NAd | Metabolite | CHEBI:18357 (ChEBI) | |
OLEA | Metabolite | CHEBI:16196 (ChEBI) | |
PALM | Metabolite | CHEBI:15756 (ChEBI) | |
PFKFB1 | Protein | P16118 (Uniprot-TrEMBL) | |
PFKFB1 dimer | Complex | R-HSA-71786 (Reactome) | |
PI(4,5)P2 | Metabolite | CHEBI:18348 (ChEBI) | |
PKA catalytic subunit | Complex | R-HSA-111920 (Reactome) | |
PKA tetramer | Complex | R-HSA-111922 (Reactome) | |
PKA:AKAP79:IQGAP1 Complex | Complex | R-HSA-381635 (Reactome) | |
PKLR-1 | Protein | P30613-1 (Uniprot-TrEMBL) | |
PLC beta1,2,3:G-alpha(q):GTP | Complex | R-HSA-400011 (Reactome) | |
PLC beta1,2,3 | Complex | R-HSA-400005 (Reactome) | Pancreatic beta cells contain PLC Beta 1, PLC Beta 2, and PLC Beta 3. It is unknown which PLC or combination of PLC's are activated in response to G(q). |
PLCB1 | Protein | Q9NQ66 (Uniprot-TrEMBL) | |
PLCB2 | Protein | Q00722 (Uniprot-TrEMBL) | |
PLCB3 | Protein | Q01970 (Uniprot-TrEMBL) | |
PP2A-ABdeltaC complex | Complex | R-HSA-165961 (Reactome) | |
PP2A-ABdeltaC complex | Complex | R-HSA-165970 (Reactome) | |
PPP2CA | Protein | P67775 (Uniprot-TrEMBL) | |
PPP2CB | Protein | P62714 (Uniprot-TrEMBL) | |
PPP2R1A | Protein | P30153 (Uniprot-TrEMBL) | |
PPP2R1B | Protein | P30154 (Uniprot-TrEMBL) | |
PPP2R5D | Protein | Q14738 (Uniprot-TrEMBL) | |
PPi | Metabolite | CHEBI:29888 (ChEBI) | |
PRKAA2 | Protein | P54646 (Uniprot-TrEMBL) | |
PRKAB2 | Protein | O43741 (Uniprot-TrEMBL) | |
PRKACA | Protein | P17612 (Uniprot-TrEMBL) | |
PRKACB | Protein | P22694 (Uniprot-TrEMBL) | |
PRKACG | Protein | P22612 (Uniprot-TrEMBL) | |
PRKAG2 | Protein | Q9UGJ0 (Uniprot-TrEMBL) | |
PRKAR1A | Protein | P10644 (Uniprot-TrEMBL) | |
PRKAR1B | Protein | P31321 (Uniprot-TrEMBL) | |
PRKAR2A | Protein | P13861 (Uniprot-TrEMBL) | |
PRKAR2B | Protein | P31323 (Uniprot-TrEMBL) | |
PRKCA | Protein | P17252 (Uniprot-TrEMBL) | |
PRKCA | Protein | P17252 (Uniprot-TrEMBL) | |
Pentadecanoic acid | Metabolite | CHEBI:42504 (ChEBI) | |
Pi | Metabolite | CHEBI:18367 (ChEBI) | |
Potassium
voltage-gated channels (beta cell, closed) | Complex | R-HSA-381655 (Reactome) | Human pancreatic beta cells contain Kv2.1, Kv3.2, Kv6.2, and Kv9.3 voltage gated potassium channels. The channels are closed in a resting beta and channels open in response to depolarization. Open channels counteract the effect of closed ATP-gated potassium channels and thereby end stimulation of insulin secretion . |
Potassium
voltage-gated channels (beta cell, open) | Complex | R-HSA-381640 (Reactome) | Human pancreatic beta cells contain Kv2.1, Kv3.2, Kv6.2, and Kv9.3 voltage gated potassium channels. The channels are closed in a resting beta and channels open in response to depolarization. Open channels counteract the effect of closed ATP-gated potassium channels and thereby end stimulation of insulin secretion . |
Potassium Channel,
closed (pancreatic beta cell) | R-HSA-446513 (Reactome) | ||
Potassium Channel,
open (pancreatic beta cell) | R-HSA-446505 (Reactome) | ||
Protein Kinase A, catalytic subunits | Complex | R-HSA-111917 (Reactome) | |
Protein Kinase C, alpha type: DAG | Complex | R-HSA-422275 (Reactome) | |
R5P | Metabolite | CHEBI:78679 (ChEBI) | |
RAP1A | Protein | P62834 (Uniprot-TrEMBL) | |
RAP1A:GDP | Complex | R-HSA-5252143 (Reactome) | |
RAP1A:GTP | Complex | R-HSA-5252145 (Reactome) | |
RAPGEF3 | Protein | O95398 (Uniprot-TrEMBL) | |
RAPGEF3:cAMP complex | Complex | R-HSA-381702 (Reactome) | |
RAPGEF3 | Protein | O95398 (Uniprot-TrEMBL) | |
RAPGEF4 | Protein | Q8WZA2 (Uniprot-TrEMBL) | |
RAPGEF4:cAMP Complex | Complex | R-HSA-381680 (Reactome) | |
RAPGEF4 | Protein | Q8WZA2 (Uniprot-TrEMBL) | |
RGZ | Metabolite | CHEBI:50122 (ChEBI) | |
SH7P | Metabolite | CHEBI:15721 (ChEBI) | |
SLC25A4 | Protein | P12235 (Uniprot-TrEMBL) | |
SLC25A4 | Protein | P12235 (Uniprot-TrEMBL) | |
SLC25A5 | Protein | P05141 (Uniprot-TrEMBL) | |
SLC25A5,6 dimers | Complex | R-HSA-187453 (Reactome) | |
SLC25A6 | Protein | P12236 (Uniprot-TrEMBL) | |
SLC2A1 | Protein | P11166 (Uniprot-TrEMBL) | |
SLC2A2 | Protein | P11168 (Uniprot-TrEMBL) | |
SNAP25 | Protein | P60880 (Uniprot-TrEMBL) | |
SNAP25 | Protein | P60880 (Uniprot-TrEMBL) | |
SNARE Complex | Complex | R-HSA-265202 (Reactome) | |
STK11 | Protein | Q15831 (Uniprot-TrEMBL) | |
STX1A | Protein | Q16623 (Uniprot-TrEMBL) | |
STX1A:STXBP1 | Complex | R-HSA-265191 (Reactome) | |
STXBP1 | Protein | P61764 (Uniprot-TrEMBL) | |
STXBP1 | Protein | P61764 (Uniprot-TrEMBL) | |
SYT5 | Protein | O00445 (Uniprot-TrEMBL) | |
SYT5 | Protein | O00445 (Uniprot-TrEMBL) | |
TALDO1 | Protein | P37837 (Uniprot-TrEMBL) | |
TALDO1 dimer | Complex | R-HSA-5659970 (Reactome) | |
TALDO1 | Protein | P37837 (Uniprot-TrEMBL) | |
TKT | Protein | P29401 (Uniprot-TrEMBL) | |
ThDP | Metabolite | CHEBI:9532 (ChEBI) | |
VAMP2 | Protein | P63027 (Uniprot-TrEMBL) | |
VAMP2 | Protein | P63027 (Uniprot-TrEMBL) | |
Voltage-gated
Calcium Channels (pancreatic beta cell) | Complex | R-HSA-265569 (Reactome) | |
Voltage-gated
Calcium Channels Type Cav1 (closed) | Complex | R-HSA-400095 (Reactome) | |
Voltage-gated
Calcium Channels Type Cav1 (open) | Complex | R-HSA-400055 (Reactome) | |
XY5P | Metabolite | CHEBI:57737 (ChEBI) | |
Zn2+ | Metabolite | CHEBI:29105 (ChEBI) | |
Zn2+ | Metabolite | CHEBI:29105 (ChEBI) | |
cAMP | Metabolite | CHEBI:17489 (ChEBI) | |
cAMP:PKA regulatory subunit | Complex | R-HSA-111923 (Reactome) | |
cAMP:PKA:AKAP79:IQGAP1 Complex | Complex | R-HSA-381615 (Reactome) | |
cAMP | Metabolite | CHEBI:17489 (ChEBI) | |
mature GLP-1 | Complex | R-HSA-381662 (Reactome) | |
p-4S-MARCKS | Protein | P29966 (Uniprot-TrEMBL) | |
p-S196,T666-MLXIPL | Protein | Q9NP71 (Uniprot-TrEMBL) | |
p-S33-PFKFB1 | Protein | P16118 (Uniprot-TrEMBL) | |
p-S568-MLXIPL | Protein | Q9NP71 (Uniprot-TrEMBL) | |
p-T172-PRKAA2 | Protein | P54646 (Uniprot-TrEMBL) | |
p-T666-MLXIPL | Protein | Q9NP71 (Uniprot-TrEMBL) | |
phosphoPFKFB1 dimer | Complex | R-HSA-163745 (Reactome) | |
transketolase dimer | Complex | R-HSA-71322 (Reactome) |
Annotated Interactions
View all... |
Source | Target | Type | Database reference | Comment |
---|---|---|---|---|
6xInsulin:2xZn2+:Ca2+ (docked granule) | R-HSA-265166 (Reactome) | |||
ACC | Arrow | R-HSA-163743 (Reactome) | ||
ACLY | Arrow | R-HSA-163770 (Reactome) | ||
ADCY5,6,8:G-alpha(s):GTP | Arrow | R-HSA-381704 (Reactome) | ||
ADCY5,6,8:G-alpha(s):GTP | mim-catalysis | R-HSA-381607 (Reactome) | ||
ADP | Arrow | R-HSA-163215 (Reactome) | ||
ADP | Arrow | R-HSA-163672 (Reactome) | ||
ADP | Arrow | R-HSA-163676 (Reactome) | ||
ADP | Arrow | R-HSA-163691 (Reactome) | ||
ADP | Arrow | R-HSA-163773 (Reactome) | ||
ADP | Arrow | R-HSA-164151 (Reactome) | ||
ADP | Arrow | R-HSA-399978 (Reactome) | ||
ADP | Arrow | R-HSA-5672027 (Reactome) | ||
ADP | R-HSA-163215 (Reactome) | |||
ADP | R-HSA-5672027 (Reactome) | |||
ADR, NAd | R-HSA-400071 (Reactome) | |||
ADRA2A,C:ADR,NAd | Arrow | R-HSA-400071 (Reactome) | ||
ADRA2A,C:ADR,NAd | Arrow | R-HSA-400092 (Reactome) | ||
ADRA2A,C | R-HSA-400071 (Reactome) | |||
AGPAT1 | Arrow | R-HSA-163748 (Reactome) | ||
AHCYL1:NAD+:ITPR1:I(1,4,5)P3 tetramer | TBar | R-HSA-169683 (Reactome) | ||
AMPK heterotrimer:AMP | Arrow | R-HSA-163664 (Reactome) | ||
AMPK heterotrimer:AMP | R-HSA-164151 (Reactome) | |||
AMPK heterotrimer (inactive) | R-HSA-163664 (Reactome) | |||
AMP | R-HSA-163664 (Reactome) | |||
AMP | TBar | R-HSA-163691 (Reactome) | ||
ARL2:GTP:ARL2BP:SLC25A4 | Arrow | R-HSA-5250209 (Reactome) | ||
ARL2:GTP:ARL2BP:SLC25A4 | mim-catalysis | R-HSA-5672027 (Reactome) | ||
ARL2:GTP:ARL2BP | Arrow | R-HSA-5250210 (Reactome) | ||
ARL2:GTP:ARL2BP | Arrow | R-HSA-5250217 (Reactome) | ||
ARL2:GTP:ARL2BP | R-HSA-5250209 (Reactome) | |||
ARL2:GTP:ARL2BP | R-HSA-5250210 (Reactome) | |||
ARL2:GTP | R-HSA-5250217 (Reactome) | |||
ARL2BP | R-HSA-5250217 (Reactome) | |||
ATP | Arrow | R-HSA-163215 (Reactome) | ||
ATP | Arrow | R-HSA-5672027 (Reactome) | ||
ATP | R-HSA-163215 (Reactome) | |||
ATP | R-HSA-163672 (Reactome) | |||
ATP | R-HSA-163676 (Reactome) | |||
ATP | R-HSA-163691 (Reactome) | |||
ATP | R-HSA-163773 (Reactome) | |||
ATP | R-HSA-164151 (Reactome) | |||
ATP | R-HSA-164377 (Reactome) | |||
ATP | R-HSA-265682 (Reactome) | |||
ATP | R-HSA-381607 (Reactome) | |||
ATP | R-HSA-399978 (Reactome) | |||
ATP | R-HSA-5672027 (Reactome) | |||
AcCho | R-HSA-400012 (Reactome) | |||
Activated AMPK heterotrimer | Arrow | R-HSA-164151 (Reactome) | ||
Activated AMPK heterotrimer | mim-catalysis | R-HSA-163691 (Reactome) | ||
Adenylate Cyclase V or VI | R-HSA-400097 (Reactome) | |||
Adenylate cyclase (Mg2+ cofactor) | R-HSA-163617 (Reactome) | |||
Adenylate cyclase
type V or VI: G-protein beta gamma Complex | Arrow | R-HSA-400097 (Reactome) | ||
Adenylyl cyclase
(pancreatic beta cell) | R-HSA-381704 (Reactome) | |||
Arrow | R-HSA-265682 (Reactome) | |||
CHRM3 | R-HSA-400012 (Reactome) | |||
Ca-channel (closed) | R-HSA-381644 (Reactome) | |||
Ca-channel (open) | Arrow | R-HSA-381644 (Reactome) | ||
Ca2+ | Arrow | R-HSA-169683 (Reactome) | ||
Ca2+ | Arrow | R-HSA-265166 (Reactome) | ||
Ca2+ | Arrow | R-HSA-265645 (Reactome) | ||
Ca2+ | R-HSA-169683 (Reactome) | |||
Ca2+ | R-HSA-265166 (Reactome) | |||
Ca2+ | R-HSA-265645 (Reactome) | |||
ChREBP:MLX | Arrow | R-HSA-163666 (Reactome) | ||
ChREBP:MLX | Arrow | R-HSA-163669 (Reactome) | ||
ChREBP:MLX | Arrow | R-HSA-163733 (Reactome) | ||
ChREBP:MLX | Arrow | R-HSA-163743 (Reactome) | ||
ChREBP:MLX | Arrow | R-HSA-163748 (Reactome) | ||
ChREBP:MLX | Arrow | R-HSA-163770 (Reactome) | ||
Core SNARE Complex | mim-catalysis | R-HSA-265166 (Reactome) | ||
DAG | Arrow | R-HSA-399998 (Reactome) | ||
DAG | R-HSA-400015 (Reactome) | |||
E4P | Arrow | R-HSA-163751 (Reactome) | ||
E4P | R-HSA-163764 (Reactome) | |||
FASN | Arrow | R-HSA-163733 (Reactome) | ||
FFAR1:fatty acid | Arrow | R-HSA-400434 (Reactome) | ||
FFAR1:fatty acid | mim-catalysis | R-HSA-416530 (Reactome) | ||
FFAR1 | R-HSA-400434 (Reactome) | |||
Fatty acids | Arrow | R-HSA-163691 (Reactome) | ||
Fru(6)P | R-HSA-163751 (Reactome) | |||
Fru(6)P | R-HSA-163764 (Reactome) | |||
G-alpha(i,o):GDP:G beta:G gamma | R-HSA-400092 (Reactome) | |||
G-alpha(i,o):GTP:G-beta:G-gamma | Arrow | R-HSA-400092 (Reactome) | ||
G-alpha(i,o):GTP:G-beta:G-gamma | R-HSA-400037 (Reactome) | |||
G-alpha(i,o):GTP | Arrow | R-HSA-400037 (Reactome) | ||
G-alpha(i,o):GTP | Arrow | R-HSA-400063 (Reactome) | ||
G-alpha(i,o):GTP | TBar | R-HSA-265166 (Reactome) | ||
G-alpha(q) 11,14,15,Q:GTP | Arrow | R-HSA-400027 (Reactome) | ||
G-alpha(q) 11,14,15,Q:GTP | R-HSA-400023 (Reactome) | |||
G-alpha(q)11,14,15,Q:G-beta:G-gamma | Arrow | R-HSA-399995 (Reactome) | ||
G-alpha(q)11,14,15,Q:G-beta:G-gamma | Arrow | R-HSA-416530 (Reactome) | ||
G-alpha(q)11,14,15,Q:G-beta:G-gamma | R-HSA-400027 (Reactome) | |||
G-alpha(q)11,14,15,Q:GDP:G-beta:G-gamma | R-HSA-399995 (Reactome) | |||
G-alpha(q)11,14,15,Q:GDP:G-beta:G-gamma | R-HSA-416530 (Reactome) | |||
G-alpha(s):GTP:G-beta:G-gamma | R-HSA-422320 (Reactome) | |||
G-beta:G-gamma (candidates) | Arrow | R-HSA-400037 (Reactome) | ||
G-beta:G-gamma (candidates) | Arrow | R-HSA-400046 (Reactome) | ||
G-beta:G-gamma (candidates) | Arrow | R-HSA-422320 (Reactome) | ||
G-beta:G-gamma (candidates) | R-HSA-400097 (Reactome) | |||
G-beta:G-gamma dimer | Arrow | R-HSA-825631 (Reactome) | ||
G-beta:G-gamma | Arrow | R-HSA-400027 (Reactome) | ||
G-protein alpha (s):GTP | Arrow | R-HSA-422320 (Reactome) | ||
G-protein alpha (s):GTP | Arrow | R-HSA-825631 (Reactome) | ||
G-protein alpha (s):GTP | R-HSA-163617 (Reactome) | |||
G-protein alpha (s):GTP | R-HSA-381704 (Reactome) | |||
G-protein with G(s) alpha:GDP | R-HSA-825631 (Reactome) | |||
GA3P | Arrow | R-HSA-163764 (Reactome) | ||
GA3P | R-HSA-163741 (Reactome) | |||
GA3P | R-HSA-163751 (Reactome) | |||
GCGR | R-HSA-163625 (Reactome) | |||
GDP | Arrow | R-HSA-381706 (Reactome) | ||
GDP | Arrow | R-HSA-381727 (Reactome) | ||
GDP | Arrow | R-HSA-399995 (Reactome) | ||
GDP | Arrow | R-HSA-400092 (Reactome) | ||
GDP | Arrow | R-HSA-416530 (Reactome) | ||
GDP | Arrow | R-HSA-825631 (Reactome) | ||
GLP-1:GLP-1R:Heterotrimeric G(s):GDP | Arrow | R-HSA-381612 (Reactome) | ||
GLP-1:GLP-1R:Heterotrimeric G(s):GDP | R-HSA-381706 (Reactome) | |||
GLP-1:GLP-1R:Heterotrimeric G(s):GTP | Arrow | R-HSA-381706 (Reactome) | ||
GLP-1R:Heterotrimeric G(s):GDP | R-HSA-381612 (Reactome) | |||
GLUT1,2 | mim-catalysis | R-HSA-499981 (Reactome) | ||
GTP | R-HSA-381706 (Reactome) | |||
GTP | R-HSA-381727 (Reactome) | |||
GTP | R-HSA-399995 (Reactome) | |||
GTP | R-HSA-400092 (Reactome) | |||
GTP | R-HSA-416530 (Reactome) | |||
GTP | R-HSA-825631 (Reactome) | |||
Glc | Arrow | R-HSA-499981 (Reactome) | ||
Glc | R-HSA-499981 (Reactome) | |||
Glucagon:GCGR | Arrow | R-HSA-163625 (Reactome) | ||
Glucagon:GCGR | mim-catalysis | R-HSA-825631 (Reactome) | ||
Glucagon | R-HSA-163625 (Reactome) | |||
Gs-activated adenylate cyclase | Arrow | R-HSA-163617 (Reactome) | ||
Gs-activated adenylate cyclase | mim-catalysis | R-HSA-164377 (Reactome) | ||
H2O | R-HSA-163750 (Reactome) | |||
H2O | R-HSA-399998 (Reactome) | |||
I(1,4,5)P3 | Arrow | R-HSA-169683 (Reactome) | ||
I(1,4,5)P3 | Arrow | R-HSA-399998 (Reactome) | ||
I(1,4,5)P3 | R-HSA-169680 (Reactome) | |||
INS(57-87) | Arrow | R-HSA-265166 (Reactome) | ||
INS(57-87) | R-HSA-265166 (Reactome) | |||
IP3 receptor homotetramer | R-HSA-169680 (Reactome) | |||
ITPR:I(1,4,5)P3 tetramer | Arrow | R-HSA-169680 (Reactome) | ||
ITPR:I(1,4,5)P3 tetramer | mim-catalysis | R-HSA-169683 (Reactome) | ||
Inactive
PP2A-ABdeltaC complex | R-HSA-163769 (Reactome) | |||
Insulin | Arrow | R-HSA-265166 (Reactome) | ||
KCNJ11 tetramer:ABCC8:Mg2+:ADP tetramer | R-HSA-265682 (Reactome) | |||
KCNJ11 tetramer:ABCC8:Mg2+:ADP tetramer | mim-catalysis | R-HSA-265682 (Reactome) | ||
KCNJ11:ATP
tetramer:ABCC8 tetramer | Arrow | R-HSA-265682 (Reactome) | ||
Ligands of FFAR1 (GPR40) | R-HSA-400434 (Reactome) | |||
MARCKS | R-HSA-399978 (Reactome) | |||
MLXIPL | Arrow | R-HSA-163688 (Reactome) | ||
MLXIPL | Arrow | R-HSA-164056 (Reactome) | ||
MLXIPL | R-HSA-163666 (Reactome) | |||
MLXIPL | R-HSA-163672 (Reactome) | |||
MLXIPL | R-HSA-163691 (Reactome) | |||
MLX | R-HSA-163666 (Reactome) | |||
Mg2+:ADP | Arrow | R-HSA-265682 (Reactome) | ||
Muscarinic
Acetylcholine Receptor M3:Acetylcholine Complex | Arrow | R-HSA-400012 (Reactome) | ||
Muscarinic
Acetylcholine Receptor M3:Acetylcholine Complex | mim-catalysis | R-HSA-399995 (Reactome) | ||
PFKFB1 dimer | Arrow | R-HSA-163750 (Reactome) | ||
PFKFB1 dimer | R-HSA-163773 (Reactome) | |||
PI(4,5)P2 | R-HSA-399998 (Reactome) | |||
PKA catalytic subunit | Arrow | R-HSA-111925 (Reactome) | ||
PKA catalytic subunit | Arrow | R-HSA-381644 (Reactome) | ||
PKA catalytic subunit | Arrow | R-HSA-381707 (Reactome) | ||
PKA catalytic subunit | Arrow | R-HSA-381713 (Reactome) | ||
PKA catalytic subunit | mim-catalysis | R-HSA-163676 (Reactome) | ||
PKA catalytic subunit | mim-catalysis | R-HSA-163773 (Reactome) | ||
PKA tetramer | R-HSA-111925 (Reactome) | |||
PKA:AKAP79:IQGAP1 Complex | R-HSA-381707 (Reactome) | |||
PKLR-1 | Arrow | R-HSA-163669 (Reactome) | ||
PLC beta1,2,3:G-alpha(q):GTP | Arrow | R-HSA-400023 (Reactome) | ||
PLC beta1,2,3:G-alpha(q):GTP | mim-catalysis | R-HSA-399998 (Reactome) | ||
PLC beta1,2,3 | R-HSA-400023 (Reactome) | |||
PP2A-ABdeltaC complex | Arrow | R-HSA-163769 (Reactome) | ||
PP2A-ABdeltaC complex | mim-catalysis | R-HSA-163688 (Reactome) | ||
PP2A-ABdeltaC complex | mim-catalysis | R-HSA-163689 (Reactome) | ||
PP2A-ABdeltaC complex | mim-catalysis | R-HSA-163750 (Reactome) | ||
PP2A-ABdeltaC complex | mim-catalysis | R-HSA-164056 (Reactome) | ||
PPi | Arrow | R-HSA-164377 (Reactome) | ||
PPi | Arrow | R-HSA-381607 (Reactome) | ||
PRKCA | R-HSA-400015 (Reactome) | |||
Pi | Arrow | R-HSA-163688 (Reactome) | ||
Pi | Arrow | R-HSA-163689 (Reactome) | ||
Pi | Arrow | R-HSA-163750 (Reactome) | ||
Pi | Arrow | R-HSA-164056 (Reactome) | ||
Potassium
voltage-gated channels (beta cell, closed) | Arrow | R-HSA-381713 (Reactome) | ||
Potassium
voltage-gated channels (beta cell, open) | R-HSA-381713 (Reactome) | |||
Potassium Channel,
closed (pancreatic beta cell) | R-HSA-400063 (Reactome) | |||
Potassium Channel,
open (pancreatic beta cell) | Arrow | R-HSA-400063 (Reactome) | ||
Protein Kinase A, catalytic subunits | mim-catalysis | R-HSA-163672 (Reactome) | ||
Protein Kinase C, alpha type: DAG | Arrow | R-HSA-400015 (Reactome) | ||
Protein Kinase C, alpha type: DAG | mim-catalysis | R-HSA-399978 (Reactome) | ||
R-HSA-111925 (Reactome) | The four protein kinase A (PKA) regulatory subunit isoforms differ in their tissue specificity and functional characteristics. The specific isoform activated in response to glucagon signalling is not known. The PKA kinase is a tetramer of two regulatory and two catalytic. The regulatory subunits block the catalytic subunits. Binding of cAMP to the regulatory subunit leads to the dissociation of the tetramer into two active dimers made up of a regulatory and a catalytic subunit. | |||
R-HSA-163215 (Reactome) | A family of antiport, ATP-ADP translocases (SLC25A4,5,6), preferentially export ATP from the matrix while importing ADP from the cytosol, thereby maintaining a high ADP:ATP ratio in the matrix. When there are increased energy demands on the body, such as under heavy exercise, cytosolic ADP rises and is exchanged with mitochondrial matrix ATP via the transmembrane ADP:ATP translocase. Increased ADP causes the proton-motive force to be discharged and protons enter via ATPase, thereby regenerating the ATP pool. There are 3 isoforms of translocases in humans; isoform 1 (SLC25A4) is the heart/skeletal muscle form, isoform 2 (SLC25A5) is the fibroblast form and isoform 3 (SLC25A6) is the liver form. All isoforms exist as homodimers. | |||
R-HSA-163617 (Reactome) | G(s)-alpha:GTP binds to inactive adenylate cyclase, causing a conformational transition in adenylate cyclase exposing the catalytic site and activating it. | |||
R-HSA-163625 (Reactome) | Glucagon (Thomsen J et al, 1972) is an important peptide hormone produced by the pancreas. It is released when the glucose level in the blood is low (hypoglycemia), causing the liver to convert stored glycogen into glucose and release it into the bloodstream. The action of glucagon is thus opposite to that of insulin. Glucagon, together with glucagon-like peptide 1 (GLP-1) and glucagon-like peptide 2 (GLP-2), are peptide hormones encoded by a single common prohormone precursor, proglucagon.The glucagon receptor (Lok S et al, 1994) plays a central role in regulating the level of blood glucose by controlling the rate of hepatic glucose production and insulin secretion. The activity of this receptor is mediated by coupling to Gs and q, which stimulate adenylyl cyclase and a phosphatidylinositol-calcium second messenger system respectively. | |||
R-HSA-163664 (Reactome) | At the beginning of this reaction, 1 molecule of 'AMPK heterotrimer (inactive)', and 1 molecule of 'AMP' are present. At the end of this reaction, 1 molecule of 'AMPK heterotrimer:AMP' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163666 (Reactome) | At the beginning of this reaction, 1 molecule of 'ChREBP protein', and 1 molecule of 'MLX protein' are present. At the end of this reaction, 1 molecule of 'ChREBP:MLX' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163669 (Reactome) | At the end of this reaction, 1 molecule of 'pyruvate kinase, liver and RBC' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163670 (Reactome) | ChREBP (Carbohydrate Response Element Binding Protein) doubly phosphorylated at threonine 666 and serine 196 is inactive and is localized to the cytosol. Removal of the phosphate residue at serine 196 allows ChREBP to translocate between the cytosol and the nucleoplasm. | |||
R-HSA-163672 (Reactome) | In its active (unphosphorylated) form, ChREBP (Carbohydrate Response Element Binding Protein) binds so-called ChRE (Carbohydrate Response Element) DNA sequence motifs found upstream of several genes involved in glucose utilization and lipid synthesis, activating transcription of these genes. Phosphorylation of ChREBP at threonine residue 666 by PKA (protein kinase A) blocks this binding activity, and thus has the effect of down-regulating expression of the target genes. ChREBP phosphorylation can be reversed by the action of protein phosphatase 2A (PP2A). | |||
R-HSA-163676 (Reactome) | Phosphorylation of ChREBP (Carbohydrate Response Element Binding Protein) at serine 196 by PKA inhibits its nuclear translocation. This reaction has been studied in detail using mouse proteins (Kawaguchi et al. 2001); the human version of the reaction is inferred from these studies. | |||
R-HSA-163688 (Reactome) | At the beginning of this reaction, 1 molecule of 'pChREBP (Thr 666)' is present. At the end of this reaction, 1 molecule of 'Orthophosphate', and 1 molecule of 'ChREBP protein' are present. This reaction takes place in the 'nucleus' and is mediated by the 'phosphatidate phosphatase activity' of 'PP2A-ABdeltaC complex'. | |||
R-HSA-163689 (Reactome) | At the beginning of this reaction, 1 molecule of 'pChREBP (Ser 196, Thr 666)' is present. At the end of this reaction, 1 molecule of 'Orthophosphate', and 1 molecule of 'pChREBP (Thr 666)' are present. This reaction takes place in the 'cytosol' and is mediated by the 'phosphatidate phosphatase activity' of 'PP2A-ABdeltaC complex'. | |||
R-HSA-163691 (Reactome) | In the nucleus, activated AMPK phosphorylates serine residue 568 of ChREBP (Carbohydrate Response Element Binding Protein). Phosphorylated ChREBP does not bind to ChRE chromosomal DNA sequence elements and thus loses its ability to promote transcription of genes involved in glycolysis and lipogenesis. | |||
R-HSA-163733 (Reactome) | At the end of this reaction, 1 molecule of 'Fatty acid synthase ' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163741 (Reactome) | Cytosolic transketolase catalyzes the reversible reaction of D-glyceraldehyde 3-phosphate and sedoheptulose 7-phosphate to form D-xylulose 5-phosphate and D-ribose 5-phosphate. The active transketolase enzyme is a homodimer with one molecule of thiamine pyrophosphate and magnesium bound to each monomer (Wang et al. 1997). | |||
R-HSA-163743 (Reactome) | At the end of this reaction, 1 molecule of 'Acetyl-CoA carboxylase 2 ' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163748 (Reactome) | At the end of this reaction, 1 molecule of '1-acyl-sn-glycerol-3-phosphate acyltransferase alpha ' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163750 (Reactome) | At the beginning of this reaction, 1 molecule of 'pPF2K-Pase complex' is present. At the end of this reaction, 1 molecule of 'Orthophosphate', and 1 molecule of 'PF2K-Pase1 homodimer' are present. This reaction takes place in the 'cytosol' and is mediated by the 'phosphatidate phosphatase activity' of 'PP2A-ABdeltaC complex'. | |||
R-HSA-163751 (Reactome) | Cytosolic transketolase catalyzes the reaction of D-glyceraldehyde 3-phosphate and D-fructose 6-phosphate to form D-erythrose 4-phosphate and D-xylulose 5-phosphate. The active transketolase enzyme is a homodimer with one molecule of thiamine pyrophosphate and magnesium bound to each monomer (Wang et al. 1997). | |||
R-HSA-163764 (Reactome) | Dimeric cytosolic transaldolase (TALDO1) catalyzes the reversible reaction of D-erythrose 4-phosphate and D-fructose 6-phosphate to form D-glyceraldehyde 3-phosphate and sedoheptulose 7-phosphate. Protein expressed from the cloned gene has been characterized biochemically and crystallographically (Banki et al. 1994; Thorell et al. 2000) and transaldolase deficiency in a patient has been correlated with a mutation in the TALDO1 gene (Verhoeven et al. 2001). | |||
R-HSA-163769 (Reactome) | Xylulose-5-phosphate binds to Protein phosphatase 2A (PP2A), activating it. This regulatory step may be the crucial physiological link explaining the coordinately increased rates of glycolysis and lipogenesis generally observed in individuals consuming high-carbohydrate diets. | |||
R-HSA-163770 (Reactome) | At the end of this reaction, 1 molecule of 'citrate lyase monomer' is present. This reaction takes place in the 'nucleus'. | |||
R-HSA-163773 (Reactome) | Activated PKA (protein kinase A) phosphorylates serine 36 of the bifunctional 6-Phosphofructo-2-kinase /Fructose-2,6-bisphosphatase (PFKFB1) enzyme. This phosphorylation inhibits the enzyme's phosphofructokinase (PFK-2) activity while activating its phosphatase activity. As a result, cytosolic levels of Fructose-2,6-bisphosphate (F-2,6-P2) are reduced. F-2,6-P2 in turn is a key positive regulator of the committed step of glycolysis, so the net effect of this phosphorylation event is a reduced rate of glycolysis. | |||
R-HSA-164056 (Reactome) | At the beginning of this reaction, 1 molecule of 'pChREBP(Ser 568)' is present. At the end of this reaction, 1 molecule of 'Orthophosphate', and 1 molecule of 'ChREBP protein' are present. This reaction takes place in the 'nucleus' and is mediated by the 'phosphatidate phosphatase activity' of 'PP2A-ABdeltaC complex'. | |||
R-HSA-164151 (Reactome) | LKB1 phosphorylates threonine residue 172 of the alpha subunit of the AMPK heterotrimer, activating it. LKB1, a serine/threonine kinase, was first identified as the gene whose mutation is associated with the Peutz-Jeghers familial cancer syndrome. This disease phenotype is consistent with the hypothesis that the interaction between LKB1 and AMPK normally plays a key role in the negative regulation of cell growth (Hardie 2004). | |||
R-HSA-164377 (Reactome) | Activated adenylate cyclase associated with the plasma membrane catalyzes the reaction of cytosolic ATP to form 3',5'-cyclicAMP and pyrophosphate. | |||
R-HSA-164423 (Reactome) | ChREBP (Carbohydrate Response Element Binding Protein) doubly phosphorylated at threonine 666 and serine 196 is inactive and is localized to the cytosol. Removal of the phosphate residue at serine 196 allows ChREBP to translocate between the cytosol and the nucleoplasm. | |||
R-HSA-169680 (Reactome) | The IP3 receptor (IP3R) is an IP3-gated calcium channel. It is a large, homotetrameric protein, similar to other calcium channel proteins such as ryanodine. The four subunits form a 'four-leafed clover' structure arranged around the central calcium channel. Binding of ligands such as IP3 results in conformational changes in the receptor's structure that leads to channel opening. | |||
R-HSA-169683 (Reactome) | IP3 promotes the release of intracellular calcium. | |||
R-HSA-265166 (Reactome) | Exocytosis of insulin-zinc granules occurs by the calcium-dependent fusion of the membrane of the secretory granule with the plasma membrane. In general, exocytosis proceeds by formation of a "SNARE pair", a complex between a SNARE-type protein on the granule and a SNARE-type protein on the plasma membrane. (The interaction is between coiled coil domains on each SNARE-type protein.) In the particular case of insulin granules in beta cells, the SNARE protein on the granule is Synaptobrevin2/VAMP2 and the SNARE protein on the plasma membrane is Syntaxin1A in a complex with SNAP-25. Unc18-1 binds Syntaxin1A and thereby prevents association with Synaptobrevin2 until dissociation of Unc18-1. Syntaxin 4 is also involved and binds filamentous actin but its exact role is unknown. Calcium dependence of membrane fusion is conferred by Synaptotagmin V, which binds calcium ions and associates with the Syntaxin1A-Synaptobrevin2 pair. The exact mechanism of Synaptotagmin's action is unknown. The migration of internal granules to the plasma membrane during slow release is also calcium dependent. Microscopically, exocytosis is seen to occur as a "kiss and run" process in which the membrane of the secretory granule fuses transiently with the plasma membrane to form a small pore of about 4 nm between the interior of the granule and the exterior of the cell. Only a portion of the insulin in a granule is secreted after which the pore closes and the vesicle is recaptured back into the cell. Dynamin-1 and NSF may play a role in recapture but the mechanism is not fully known. The major effect of adrenaline and noradrenaline on insulin secretion is the inhibition of exocytosis of pre-existing insulin secretory granules. The inhibition occurs at a "distal site", that is, the effect is most pronounced on granules already near the cytosolic face of the plasma membrane. The effect is caused by the Gi/o alpha:GTP complex but the exact mechanism by which Gi/o alpha:GTP inhibits exocytosis is unknown. On release, the higher pH in the extracellular region favours dissociation of Zn2+ from insulin. The insulin hexamer becomes unstable at this higher pH and it dissociates into the active insulin monomer. | |||
R-HSA-265645 (Reactome) | Voltage-gated calcium channels respond to a change in voltage across the plasma membrane by opening and allowing free movement of calcium ions. In an unstimulated cell the concentration of calcium ions outside the cells is higher than inside due to calcium transporters so channel opening results in an influx of calcium into the cytosol. In the cytosol the calcium ions cause an immediate exocytosis of the readily releasable pool of docked insulin granules as well as a migration of reserve granules toward the plasma membrane where they will be released during the second, sustained phase of insulin secretion. Mouse and human beta cells are known to contain L type channels Cav1.2 and Cav1.3, both of which have been shown to physically associate with docked insulin granules via Syntaxin1A. Cav1.2 and Cav1.3 predominate in the initial rapid release of insulin. Human beta cells also contain the P/Q type channel Cav2.1 and the R type channel Cav2.3. Cav2.3 is involved in regulating the second, sustained phase of insulin release but signaling and regulatory differences between the two phases of secretion are not fully characterized. Human cells also exhibit T-type (brief burst) calcium currents but the responsible channel has not been identified. | |||
R-HSA-265682 (Reactome) | The beta-cell ATP-sensitive potassium channel (KATP channel) comprise the tetrameric ATP-sensitive inward rectifier potassium channel 11 (KCNJ11, Kir6.2) and the tetrameric channel regulator ATP-binding cassette sub-family C member 8 (ABCC8). When the ATP/ADP ratio is high, the KCNJ11 (Kir6.2) subunit binds ATP and the channel closes. Conversely, when the ADP:ATP ratio is high, the ABCC8 (SUR1) subunit binds magnesium-ADP and the channel is open. The KATP channels in the beta cell are inwardly rectifying (allowing potassium ions to pass out of the cell) and are partially responsible for maintaining the resting potential of the cell, about -70 mV. Closure of the KATP channels causes a depolarization (a reduction in the voltage differential) across the plasma membrane. The antidiabetic activity of sulfonylurea drugs such as acetohexamide, tolbutamide, glipzide, glibenclamide, and glimepiride is due to their binding ABCC8 (SUR1) subunits and inhibiting potassium efflux. | |||
R-HSA-381607 (Reactome) | Activated adenylyl cyclase catalyzes the conversion of one molecule of ATP to one molecule of 3',5'-cyclic AMP (cAMP) and one molecule of pyrophosphate. | |||
R-HSA-381608 (Reactome) | Each molecule of Epac2 binds 2 molecules of cAMP. Epac2 binds cAMP less tightly than PKA binds cAMP so it is believed that Epac2 binds cAMP after PKA is saturated. The binding of cAMP by Epac2 activates the guanyl nucleotide exchange activity of Epac2. Epac2 has also been shown to directly bind the SUR1 subunits of ATP-gated potassium channels (KATP channels) in beta cells so Epac2 may regulate potassium transport. Epac2 interacts with the calcium sensor Piccolo in a complex with Rim2 at the cell membrane. This may influence exocytosis of insulin. Epac2 also interacts with the ryanodine-sensitive calcium channel on the ER membrane and may cause release of calcium from the ER into the cytosol. | |||
R-HSA-381612 (Reactome) | Glucagon-like Peptide-1 is synthesized in intestinal L-cells in response to the presence of glucose and fatty acids absorbed from the intestine. Most GLP-1 is the GLP-1 (7-36) amidated form; some GLP-1 is the GLP-1 (7-37) form. GLP-1 circulates to the pancreas where it binds the Glucagon-like Peptide-1 Receptor (GLP-1R), a G-protein coupled receptor located on the plasma membrane of beta cells. GLP-1R is a seven-pass transmembrane protein and a member of the B family of GPCRs, which have N-terminal extracellular domains of 100-150 amino acids. GLP-1 interacts with the extracellular N-terminal region of GLP-1R. | |||
R-HSA-381644 (Reactome) | Activated Protein Kinase A promotes the release of calcium from the endoplasmic reticulum into the cytosol. This may be due to phosphorylation of ER calcium channels by PKA, however this has not been demonstrated. | |||
R-HSA-381668 (Reactome) | Each molecule of Epac1 binds 1 molecule of cAMP. Epac1 binds cAMP less tightly than PKA binds cAMP so it is believed that Epac1 binds cAMP after PKA is saturated. The binding of cAMP by Epac1 activates the guanyl nucleotide exchange activity of Epac1. Epac1 has also been shown to bind the SUR1 subunit of ATP-gated potassium channels (KATP channels) in beta cells so Epac1 may participate in direct regulation of potassium transport. Epac1 also interacts with the calcium sensor Piccolo in a complex with Rim2 at the cell membrane. This may influence exocytosis of insulin. | |||
R-HSA-381704 (Reactome) | By analogy with adenylyl cyclases I and II, adenylyl cyclase VIII is activated by G(s) alpha:GTP by protein-protein interaction between G(s) alpha and the C2 region of adenylyl cyclase VIII, forming a complex. Adenylyl cyclase VIII is present in beta cells of rat and is activated by both G(s) alpha:GTP and calcium:calmodulin, thus integrating signals from both GLP-1 via G(s) alpha and glucose via calcium. Human beta cells contain adenylyl cyclases V and VI, which are also activated by G(s) alpha:GTP, and may contain additional adenylyl cyclases. | |||
R-HSA-381706 (Reactome) | GLP-1R that has bound GLP-1 activates the alpha subunit of the heterotrimeric G-protein G(s) by protein-protein interaction between intracellular loop 3 of GLP-1R and G(s). The activation causes exchange of GDP for GTP by the alpha subunit of G(s). | |||
R-HSA-381707 (Reactome) | The inactive Protein Kinase A (PKA) complex contains 2 regulatory subunits and 2 catalytic subunits. Binding of the regulatory subunits to the catalytic subunits maintains inactivity. In humans there are 3 different catalytic subunits and 4 different regulatory subunits. The particular subunits present in the beta cells of the pancreas are unknown. In beta cells PKA is associated with AKAP79 and IQGAP1, which are believed to tether PKA to the inner surface of the plasma membrane. Activation by cAMP occurs when each regulatory subunit binds 2 molecules of cAMP, causing dissociation of the catalytic subunits. The active catalytic subunits are thereby released to phosphorylate their target proteins. Prolonged exposure to increased cAMP levels results in translocation of the active catalytic subunits to the nucleus, where they regulate the PDX-1 and CREB transcription factors and cause increased transcription of the insulin gene. | |||
R-HSA-381713 (Reactome) | Protein kinase A acts to antagonize voltage-gated potassium channels (Kv channels) by increasing the polarizing voltage required to open them. Maintenance of the Kv channels in the closed state prolongs depolarization and insulin secretion. The exact mechanism of the interaction between PKA and the Kv channels is unknown. | |||
R-HSA-381727 (Reactome) | EPAC1 and EPAC2 are activated by binding cAMP and positively regulate the exchange of GDP for GTP by the small GTPase RAP1A. The downstream effects of RAP1A:GTP in beta cells are uncertain but may involve increasing the number of "restless newcomer" secretory granules near the plasma membrane and thereby increasing secretion of insulin. Other effects of RAP1A :GTP may include regulating beta cell proliferation through activation of the Raf/MEK/ERK mitogenic cascade and activation of the PI3 Kinase/PDK/PKC cell growth pathway. | |||
R-HSA-399978 (Reactome) | One of the known targets of PKC-alpha is the Myristoylated Alanine-rich C Kinase Substrate (MARCKS). MARCKS is phosphorylated at 4 serine residues and is believed to affect trafficking of insulin granules, increasing insulin secretion. | |||
R-HSA-399995 (Reactome) | The binding of acetylcholine to the Muscarinic Acetylcholine Receptor M3 activates the heterotrimeric G protein, Gq, associated with the M3 receptor. Activation occurs through protein-protein interaction and results in the alpha subunit of Gq exchanging GDP for GTP (i.e releasing GDP and binding GTP). The 3 subunits of the G protein then dissociate into an alpha:GTP complex and a beta:gamma complex. | |||
R-HSA-399998 (Reactome) | Phospholipase C beta-1 associated with the G(q) complex in the plasma membrane catalyzes the hydrolysis of 1-Phosphatidyl-D-myo-inositol 4,5-bisphosphate to yield D-myo-Inositol 1,4,5-trisphosphate and 1,2-Diacylglycerol. | |||
R-HSA-400012 (Reactome) | Intrapancreatic parasympathetic (vagal) nerve endings release acetylcholine during preabsorptive and absorptive phases of feeding. The acetylcholine binds Muscarinic Acetylcholine Receptor M3 on pancreatic islet beta cells (inferred from experiments with knockout mice). | |||
R-HSA-400015 (Reactome) | Diacylglycerol, produced by PLC beta-mediated PIP2 hydrolysis in G alpha (q) signalling, remains in the plasma membrane and binds Protein Kinase C alpha (PKC-alpha), causing PKC-alpha to translocate from the cytosol to the plasma membrane. PKC-alpha is thereby activated and phosphorylates target proteins. | |||
R-HSA-400023 (Reactome) | The Gq alpha:GTP complex activates Phospholipase C beta-1 through protein interaction (inferred from homologues in Bos taurus). The activation by Gq alpha is insensitive to pertussis toxin whilst activation of PLC beta by the G beta-gamma complex is sensitive to pertussis toxin. | |||
R-HSA-400027 (Reactome) | In the non-activated state heterotrimeric G proteins exist at membranes as heterotrimeric complexes of alpha, beta, and gamma subunits, with the alpha subunit bound to GDP. Upon activation by a receptor coupled to the heterotrimer, exchange of GDP for GTP by the Gq alpha subunit causes the alpha subunit to lose affinity for the beta and gamma subunits. The alpha subunit with bound GTP then dissociates from the beta and gamma subunits. | |||
R-HSA-400037 (Reactome) | Exchange of GDP for GTP by the alpha subunit of the heterotrimeric G-protein complex causes the complex to dissociate into the G alpha:GTP complex and the beta-gamma complex. Both complexes have effector functions. | |||
R-HSA-400046 (Reactome) | Closing (inhibition) of the L-type calcium channels in the plasma membrane prevents the flow of calcium ions across the membrane. | |||
R-HSA-400063 (Reactome) | ATP-sensitive Potassium channels open and allow an inward rectifying current of potassium ions to flow, reestablishing the resting potential of the cell. | |||
R-HSA-400071 (Reactome) | The pancreatic beta cell contains Alpha2A and Alpha2C Adrenergic Receptors. These are G-protein coupled receptors that can bind either adrenaline or noradrenaline. | |||
R-HSA-400092 (Reactome) | In the pancreatic beta cell, alpha2 adrenergic receptors are coupled to Gi and Go heterotrimeric G-proteins. Binding of adrenaline or noradrenaline by the alpha2 adrenergic receptor acts through protein-protein interaction to stimulate the Gi alpha subunit or Go alpha subunit in heterotrimeric G-protein complexes to exchange GDP for GTP. The particular G alpha subunits have been identified in mice as Gi alpha1, Gi alpha 2, and Go alpha2. | |||
R-HSA-400097 (Reactome) | Adenylyl cyclases V and VI are the particular adenylyl cyclases present in beta cells of the human pancreas. The G-protein beta-gamma complex interacts with adenylyl cyclases via protein-protein interactions with the C1 and C2 cytoplasmic loops of adenylyl cyclase. The interaction may produce either stimulation or inhibition of the adenylyl cyclase depending on the particular adenylyl cyclase. In the case of adenylyl cyclases V and VI the interaction inhibits cyclase activity. | |||
R-HSA-400434 (Reactome) | Free fatty acid receptor 1 (FFAR1), also known as GPR40, is a G-protein coupled receptor located in the plasma membrane of pancreatic beta cells. FFAR1/GPR40 binds medium and long chain free fatty acids (free fatty acids having more than 12 carbon groups). | |||
R-HSA-416530 (Reactome) | FFAR1 (GPR40) is a G-protein coupled receptor. Based on studies with inhibitors of G proteins such as pertussis toxin FFAR1 is believed to signal through Gq/11. Binding of free fatty acids by FFAR1 activates the heterotrimeric Gq complex, which then activates Phospholipase C. From experiments in knockout mice it is estimated that signaling through FFAR1 is responsible for about 50% of the augmentation of insulin secretion produced by free fatty acids. The rest of the augmentation is due to metabolism of the free fatty acids within the pancreatic beta cell. | |||
R-HSA-422320 (Reactome) | The binding of GTP by G(s) alpha causes the heterotrimeric G-protein complex to reorientate, exposing previously bound faces of the G(s) alpha:GTP complex and the G-beta: G-gamma complex. Unlike the case with Gi/o heterotrimers, Gs heterotrimers are not observed to significantly dissociate in living cells. | |||
R-HSA-499981 (Reactome) | Human pancreatic beta cells express glucose transporters 1 and (GLUT1, GLUT2), which are responsible for uptake of glucose from the extracellular medium into the cytosol. (Rodent pancreatic beta cells express only Glut2.) | |||
R-HSA-5250209 (Reactome) | The complex between ADP-ribosylation factor-like protein 2-binding protein (ARL2BP aka BART) and GTP-bound ADP-ribosylation factor-like protein 2 (ARL2:GTP) is able to bind the ADP/ATP translocase 1 protein (SLC25A4 aka ANT1) at the mitochondrial inner membrane (Zhang et al. 2009, Bailey et al. 2009). ARL2 is essential for a number of mitochondrial functions, including mitochondrial morphology, motility and maintenance of ATP levels. | |||
R-HSA-5250210 (Reactome) | When ADP-ribosylation factor-like protein 2-binding protein (ARL2BP aka BART) binds GTP-bound ADP-ribosylation factor-like protein 2 (ARL2:GTP), the resultant complex can enter the mitochondrion via an unknown mechanism (Zhang et al. 2009, Bailey et al. 2009). Although ARL2 is a member of the ARF family of G proteins, it lacks the myristoylation at glycine-2 characteristic of that family and thus can move across the mitochondrial membrane into the intermembrane space (Sharer et al. 2002). | |||
R-HSA-5250217 (Reactome) | ADP-ribosylation factor-like protein 2 (ARL2) is a small (21kDa) GTPase protein that is able to bind GDP or GTP. It is implicated in a range of processes from trafficking processes to regulation of microtuble dynamics. ADP-ribosylation factor-like protein 2-binding protein (ARL2BP aka BART) is an effector protein that binds ARL2 (Zhang et al. 2009, Bailey et al. 2009). This binding is dependent on ARL2 being in its GTP-bound form. | |||
R-HSA-5672027 (Reactome) | A family of antiport, dimeric ATP-ADP translocases (SLC25A4,5,6), preferentially export ATP from the matrix while importing ADP from the cytosol, thereby maintaining a high ADP:ATP ratio in the matrix. When there are increased energy demands on the body, such as under heavy exercise, cytosolic ADP rises and is exchanged with mitochondrial matrix ATP via the transmembrane ADP:ATP translocase. Increased ADP causes the proton-motive force to be discharged and protons enter via ATPase, thereby regenerating the ATP pool. There are 3 isoforms of translocases in humans with isoform 1 (SLC25A4, NAT1) being the heart/skeletal muscle form. | |||
R-HSA-825631 (Reactome) | The G(s)alpha G-beta G-gamma complex bound to glucagon, in the plasma membrane, releases a molecule of bound GDP, binds a molecule of GTP, and dissociates to yield a G(s)alpha:GTP complex and a G-beta:G-gamma dimer. | |||
R5P | Arrow | R-HSA-163741 (Reactome) | ||
RAP1A:GDP | R-HSA-381727 (Reactome) | |||
RAP1A:GTP | Arrow | R-HSA-381727 (Reactome) | ||
RAPGEF3:cAMP complex | Arrow | R-HSA-265682 (Reactome) | ||
RAPGEF3:cAMP complex | Arrow | R-HSA-381668 (Reactome) | ||
RAPGEF3:cAMP complex | Arrow | R-HSA-381727 (Reactome) | ||
RAPGEF3 | R-HSA-381668 (Reactome) | |||
RAPGEF4:cAMP Complex | Arrow | R-HSA-265682 (Reactome) | ||
RAPGEF4:cAMP Complex | Arrow | R-HSA-381608 (Reactome) | ||
RAPGEF4:cAMP Complex | Arrow | R-HSA-381727 (Reactome) | ||
RAPGEF4 | R-HSA-381608 (Reactome) | |||
SH7P | Arrow | R-HSA-163764 (Reactome) | ||
SH7P | R-HSA-163741 (Reactome) | |||
SLC25A4 | R-HSA-5250209 (Reactome) | |||
SLC25A5,6 dimers | mim-catalysis | R-HSA-163215 (Reactome) | ||
SNAP25 | R-HSA-265166 (Reactome) | |||
SNARE Complex | Arrow | R-HSA-265166 (Reactome) | ||
STK11 | mim-catalysis | R-HSA-164151 (Reactome) | ||
STX1A:STXBP1 | R-HSA-265166 (Reactome) | |||
STXBP1 | Arrow | R-HSA-265166 (Reactome) | ||
SYT5 | R-HSA-265166 (Reactome) | |||
TALDO1 dimer | mim-catalysis | R-HSA-163764 (Reactome) | ||
TBar | R-HSA-265166 (Reactome) | |||
VAMP2 | R-HSA-265166 (Reactome) | |||
Voltage-gated
Calcium Channels (pancreatic beta cell) | mim-catalysis | R-HSA-265645 (Reactome) | ||
Voltage-gated
Calcium Channels Type Cav1 (closed) | Arrow | R-HSA-400046 (Reactome) | ||
Voltage-gated
Calcium Channels Type Cav1 (closed) | TBar | R-HSA-265166 (Reactome) | ||
Voltage-gated
Calcium Channels Type Cav1 (open) | R-HSA-400046 (Reactome) | |||
XY5P | Arrow | R-HSA-163741 (Reactome) | ||
XY5P | Arrow | R-HSA-163751 (Reactome) | ||
XY5P | Arrow | R-HSA-163769 (Reactome) | ||
Zn2+ | Arrow | R-HSA-265166 (Reactome) | ||
Zn2+ | TBar | R-HSA-265682 (Reactome) | ||
cAMP:PKA regulatory subunit | Arrow | R-HSA-111925 (Reactome) | ||
cAMP:PKA:AKAP79:IQGAP1 Complex | Arrow | R-HSA-381707 (Reactome) | ||
cAMP | Arrow | R-HSA-164377 (Reactome) | ||
cAMP | Arrow | R-HSA-381607 (Reactome) | ||
cAMP | R-HSA-111925 (Reactome) | |||
cAMP | R-HSA-381608 (Reactome) | |||
cAMP | R-HSA-381668 (Reactome) | |||
cAMP | R-HSA-381707 (Reactome) | |||
mature GLP-1 | R-HSA-381612 (Reactome) | |||
p-4S-MARCKS | Arrow | R-HSA-399978 (Reactome) | ||
p-S196,T666-MLXIPL | Arrow | R-HSA-163676 (Reactome) | ||
p-S196,T666-MLXIPL | R-HSA-163689 (Reactome) | |||
p-S568-MLXIPL | Arrow | R-HSA-163691 (Reactome) | ||
p-S568-MLXIPL | R-HSA-164056 (Reactome) | |||
p-T666-MLXIPL | Arrow | R-HSA-163670 (Reactome) | ||
p-T666-MLXIPL | Arrow | R-HSA-163672 (Reactome) | ||
p-T666-MLXIPL | Arrow | R-HSA-163689 (Reactome) | ||
p-T666-MLXIPL | Arrow | R-HSA-164423 (Reactome) | ||
p-T666-MLXIPL | R-HSA-163670 (Reactome) | |||
p-T666-MLXIPL | R-HSA-163676 (Reactome) | |||
p-T666-MLXIPL | R-HSA-163688 (Reactome) | |||
p-T666-MLXIPL | R-HSA-164423 (Reactome) | |||
phosphoPFKFB1 dimer | Arrow | R-HSA-163773 (Reactome) | ||
phosphoPFKFB1 dimer | R-HSA-163750 (Reactome) | |||
transketolase dimer | mim-catalysis | R-HSA-163741 (Reactome) | ||
transketolase dimer | mim-catalysis | R-HSA-163751 (Reactome) |