Gastrin-CREB signaling via PKC and MAPK (Homo sapiens)

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11, 26, 55154816, 522313, 368, 4442221, 3917402819, 425, 452, 9, 24, 35, 46232121427nucleoplasmcytosolGHSR NPFF(69-76) GNG2 FPR2 EDN2 GNA11 Prokineticin receptors F2R(27-425) GAST(76-92)GNG12 LTD4 CCL23-2 p-4S,T359,T573-RPS6KA1 PROK1 PGF2a EDN1 LTB4R GNA15 AGT(34-41) Basic L-amino acids CYSLTR1 MT-RNR2 CYSLTR2 TACR3 PIK3CA NPSR1 LPA AcCho GNGT1 P2RY2 Neurotensin receptor CCKAR OXT(20-28) HTR2A Ligand:GPCRcomplexesthatactivateGq/11:Heterotrimeric G-protein Gq (inactive)G-protein alpha(q/11):PI3K alphaF2RL3(18-385) TAC3 LTB4 GNB4 HCRTR1 CCKBR GPRC6A PGF2a EDN2 XCR1 AcCho LXA4 TRH(84-86) GNB1 GNA14 5HT Carboxylate ligands of FFAR2 TRH(227-229) P2RY11 GNA14 GNB4 NMBR Photon TXA2 AVPR1B PIK3R2 Valerate GNAQ LTB4R PROK2 NMB(47-56) GNA11 LTE4 O-octanoyl-L-serine-GHRL-1(24-51) thrombin heavy chain ATP P2RY6 AGT(34-41) Ligands of FFAR1 (GPR40) HCRT(34-66) GNA11 GDPCHRM1 FPR2 Cysteinyl leukotriene receptors Phospho-Ribosomalprotein S6 kinaseQRFPR BRS3 PTAFR GNG10 EDNRA ATP TACR2 TRHR XCR1 AVP(20-28) HTR2C PGE2 PIK3CA Acyl Ghrelin ATPGNA14 PAF XC1 ligands GPR68 APP(672-713) BRS3 KISS1(68-121) GNG3 NMUR1 OPN4 PLCB1 OLEA TACR2 HBEGF(149-208)EDN1 UTS2 AGTR1 TACR1 TRH(186-188) ADP PLCB2 GNRH2(24-33) GRP(24-50) ADRA1B NMB(47-56) GNAQ KISS1(68-121) TXA2 Alpha-1 adrenoceptor NMUR2 MLN(26-47) PI(4,5)P2DecS-GHRL-1(24-50) Neuropeptide FF receptor CASR CHRM1 OXT(20-28) AGTR1 BDKRB1 Bradykinin receptor FFAR2 CHRM5 LTD4 P2RY10 PTGFR NRAS Ligand:GPCRcomplexesthatactivateGq/11:Heterotrimeric G-protein Gq (active)AVPR1A RGZ LPAR6 ADRA1B GNG5 MLNR EDN3(97-117) TACR2 KALRN AVPR1A,B FPR2 ADRA1B HCOOH TRH(84-86) CCKBR OPN4 Valerate TRH(135-137) LPAR2 DecS-GHRL-1(24-51) TRIO family RhoGEFsHCRT(34-66) LPA G-protein alpha(q/11): GTPAGT(34-41) UDP GCGR Melanin-concentrating hormone receptors KISS1R LPAR5 PLCB1 O-octanoyl-L-serine-GHRL-1(24-50) BUT RGS18 KALRN RPS6KA1 CREB1SOS1 GAST(76-92) GNGT2 NPSR1 O-octanoyl-L-serine-GHRL-1(24-50) 5HT MLNR OXTR TAC1(58-68) GNG11 NMBR L-Glu GPRC6A CCK GNA11 GNA11 H+ GNA15 BDKRB2 FFAR3 GRB2:SOS1:HB-EGF:p-6Y-EGFRDDCX Endothelin receptor PIK3R3 RGS proteins activefor G alpha (q)GAST(76-92) GPR68 HCRTR2 LPAR6 GNRH ligands PROKR1 ADRA1D GNB1 PMCH(147-165) LPAR4 LXA4 MLN(26-47) O-octanoyl-L-serine-GHRL-1(24-50) LPAR1 GNG3 p-T202,Y204-MAPK3 AVPR1B GNG7 PGE2 KISS1R LTB4 DecS-GHRL-1(24-51) TACR1 GAST(76-92) AGTR1 PTAFR GPR132 TBXA2R NMS LTB4R2 EGFRUDP PAF NPFF(69-76) TAC3 G-protein alpha(q):GRK5ANXA1 p-T185,Y187-MAPK1 TAC1(98-107) PTGFR PTGFR Bradykinin NMU AVPR1B ATPBombesin-like receptor GNG5 HCRTR1 ADRBK1PMCH(147-165) P2RY11 QRFP P2RY1 OXT(20-28) PROKR1 TRH(114-116) HBEGF(63-148)HCRT(34-66) SAA1(19-122) MMP3G-protein alpha(q/11):Trio familyRhoGEFsGPR4 GHSR OXTR NTS(151-163) GNG8 P2RY2 DAGCa2+ HCRT(70-97) GNB4 F2RL3(18-385) HRAS GNG4 PRKCA TACR3 TAC1(98-107) Urotensin 2, 2B Ribosomal protein S6kinaseCHRM5 GCGR RGS19 thrombin heavy chain GRP(24-50) PALM Glucagon Cysteinyl leukotrienes p21 RAS:GDPHTR2B KISS1(68-121) LPAR4 HB-EGF:p-6Y-EGFRdimerHCRTR2 GNAQ PI3K alphaGNB3 HTR2B OPN4 CHRM3 GNB5 HCOOH G-protein alpha(q):GRK2MLN(26-47) GNG2 P2RY1 PAF P2RY1 GDPFFAR2 SOS1 PLCB2 ADR TBXA2R NPFF(69-76) CYSLTR2 PROKR2 LTB4R2 PIK3R2 TRHR GNG2 F2R(27-425) CH3COO- GPR65 GNG2 GNG13 GNG13 GDP FFAR1 P2RY2 OPN4 QRFP PMCH(147-165) GNA14 P2RY6 GTP LPAR5 GNG12 RGZ ADRBK1 FFAR1 GNGT1 NAd Carboxylate ligands of FFAR3 SAA1(19-122) GNG3 EDN3(97-117) EDN1 AVPR1A Hist F2RL2(22-374) TRIO OLEA GNG4 LPAR3 GNB2 RPS6KA3 LTB4R2 BDKRB1 NMS GPR68 NMU Gastrin:CCKBRNTSR2 CCKBR GRB2-1 CASR Photon PIK3R1 F2RL2(22-374) UTS2R GNB5 FFAR1 TBXA2R Ca2+ NRAS GPRC6A GNGT1 UTS2 MCHR2 GNA14 ADPGNG4 F2RL1(37-397) GNA11 GRPR NMS AVP(20-28) GNG8 BUT ADRA1A PGF2a NPFFR1 GNA11 HCRT(34-66) NMUR1 GRM1 NTS(151-163) HRH1 PLCB3 EDNRA OLEA LTB4 GNB2 GNA11 PIK3R3 NTSR1 TAC1(98-107) P2RY10 thrombin heavy chain Prokineticin APP(672-713) PTGFR HTR2A F2RL1(37-397) GNG7 FFAR2 TRH(114-116) Basic L-amino acids P2RY11 TRH TRH(152-154) OXTR LPAR6 GNA14 TRHR AVP(20-28) GNB5 PAF P2RY1 TACR1 HXA NTS(151-163) AcCho GTPNTSR1 LTC4 GNRHR I(1,4,5)P3DAG LTB4 PLC beta:G alpha(q/11)GNA15 GTP GNB2 GNAQ BUT GNG11 XCL1 GDP GHSR GCGR GNG4 UTS2B GPR132 GRM1 H+ p-6Y-EGFR HTR2C NPFF(69-76) Hist GNAQ GNA11 Effects of PIP2hydrolysisO-octanoyl-L-serine-GHRL-1(24-51) PTGER1 NMU Ligand:GPCRcomplexes thatactivate Gq/11KRAS TRH(135-137) P2RY11 OXTR TACR1 EtCOO- or C2H5COO- p21 RAS:GTPADR TACR3 Ca2+ GDP ANXA1 RGS2 LTD4 p-6Y-EGFR NPS(1-467) GPR65 GPR17 5HT HRAS GPRC6A ligands LPAR4 NPSR1 XCR1 NTSR1 GNAQ H+ ADRA1A GRB2-1 HRH1 PRKCANMUR1 GNB3 FPRL1 ligands GNGT2 LPAR6 O-octanoyl-L-serine-GHRL-1(24-51) GNG7 GNRHR2 GNRH2(24-33) HCRTR2 LTE4 GNG13 GAST(76-92) CCL23-2 AVPR1A Basic L-amino acids ADP G-protein beta-gammacomplexBDKRB1 G-protein alpha(q/11):GDPPentadecanoic acid PROK1 ADRA1D KISS1(68-121) CHRM5 MLN(26-47) GPR17 GNAQ APP(672-713) GNB5 NTSR2 GPR65 XCL2 PROK2 FPR2 NPS(1-467) TACR2 GNG8 GNA15 GPR17 Proteinase-activated receptors Bradykinin GNGT2 NMS KISS1R MCHR1 FFAR1 thrombin light chain CHRM3 GNG8 GRM5 FFAR3 GDP LPAR1 CH3COO- Glucagon KRAS GTP TRH(84-86) HTR2B GNA14 GNG11 EDN3(97-117) NMU P2RY10 HBEGF(63-148) GNA15 UTS2R TRIO CH3COO- CCK AGTR1 GNG7 RGS21 thrombin light chain LPAR4 Photon MCHR2 L-Glu ADRA1D Hist GNRHR CYSLTR2 CASR Bradykinin TRH(152-154) PTGER1 Bombesin-like peptide GNA14 HCRT(70-97) TRH(135-137) HCRTR1 F2RL2(22-374) P2RY10 CHRM1, 3, 5 MT-RNR2 TAC1(58-68) GNAQ MCHR2 NPFFR1 HXA Glucagon GNB4 GnRH receptor TRH(114-116) HRH1 PALM RGZ GNA15 NTS(151-163) p-4S,T356,T570-RPS6KA2 5-HT2 receptor PALM GNRH2(24-33) PROKR2 GTP GRB2-1:SOS1HBEGF(20-62)HCRT(70-97) DecS-GHRL-1(24-50) BRS3 HCOOH PROK1 DecS-GHRL-1(24-50) CYSLTR1 GNRHR2 GNA15 PROKR2 L-Glu GNA11 GRM1 GNA15 NPS(1-467) TACR3 XCL1 XCL2 GPCRs that activateGq/11GNAQ ADP GTP EDNRB LPAR1 TAC1(58-68) DecS-GHRL-1(24-51) PLCB3 F2RL3(18-385) PMCH(147-165) GNA14 PTAFR ADP GRPR UTS2 TRH(152-154) thrombin heavy chain thrombin light chain GNGT2 EDNRA GNG12 Neuromedin-U receptors NPFFR1 SAA1(19-122) GNAQ F2RL1(37-397) HeterotrimericG-protein Gq/11(inactive)LPA-binding EDG receptors EtCOO- or C2H5COO- TRH(186-188) HTR2C Group I Metabotropic glutamate receptors MCHR1 MCHR1 Ligands of GPCRsthat activate Gq/11PGE2 CHRM1 BDKRB2 MT-RNR2 NPFFR2 LPAR3 BDKRB2 FFAR3 CCK EtCOO- or C2H5COO- Endothelin p-4S,T231,T365-RPS6KA3 Pentadecanoic acid NPSR1 HBEGF(20-208)GNG10 Glucagon Hist TXA2 NAd PTGER1 GNRH1(24-33) LPAR2 GNA11 TAC1(98-107) p-ERK1/2/5ATP CCKBR UDP MLNR CYSLTR1 LPAR2 ADPUTS2R GRP(24-50) KISS1R GRM5 PTAFR CCKBR OXT(20-28) GRK5CASR ATP PLC-betaQRFPR HRH1 GNGT1 LPA QRFPR GPR4 P2RY6 FFAR2 AVP(20-28) QRFP PIK3R1 GNA14 CCL23-2 UTS2B PLCB4 GNB2 EDN2 GNG11 ADRA1A HBEGF(63-148) HTR2A XCR1 Catecholamine GNRH1(24-33) GNB1 p-S133-CREB1P2RY2 PGE2 GPRC6A LPA XCL2 HXA HCRTR1 CCKAR UDP GNG13 GPR132 PROK2 NAd LTB4 receptors LTE4 GNG10 Protein Kinase C,alpha type: DAGNMB(47-56) CCK TRH(227-229) AcCho NPS(1-467) GTP GTPpH sensing receptors UTS2R ARHGEF25 5HT CCKAR G-protein alpha(q/11)NPFFR2 LXA4 RPS6KA2 TBXA2R HCRTR2 TRH(227-229) NMUR2 GNA15 L-Glu PTGER1 p-T218,Y220-MAPK7 GNG12 DDCX PLCB4 Pentadecanoic acid GRK5 QRFPR GNA14 TAC3 thrombin light chain GNRH1(24-33) GNB1 P2RY6 TAC1(58-68) GPR17 DDCX GNRHR GAST(76-92) GNA15 TRH(186-188) NTSR2 TXA2 GNB3 GPR4 LPAR3 GNG5 ADR GHSR EDNRB PGF2a LTC4 GTP GNA15 GTP GNAQ GNB3 NPFFR2 PROKR1 GCGR FFAR3 ARHGEF25 GNRHR2 LTB4R NMBR MLNR Valerate CCKBRBradykinin LPAR5 CHRM3 EDNRB GRPR UTS2B Photon AGT(34-41) Cholecystokinin receptors TAC3 TRHR RAF/MAP kinasecascadeXCL1 NMUR2 GNG5 H+ GNG3 QRFP F2R(27-425) LTC4 NMUR2 ANXA1 Ca2+ HCRT(70-97) GRM5 GNG10 10, 3010, 3010, 3025, 4110, 302010, 3010, 3010, 302034, 4310, 301, 37, 543, 6, 7, 18, 29...


Description

Gastrin is a hormone whose main function is to stimulate secretion of hydrochloric acid by the gastric mucosa, which results in gastrin formation inhibition. This hormone also acts as a mitogenic factor for gastrointestinal epithelial cells. Gastrin has two biologically active peptide forms, G34 and G17.Gastrin gene expression is upregulated in both a number of pre-malignant conditions and in established cancer through a variety of mechanisms. Depending on the tissue where it is expressed and the level of expression, differential processing of the polypeptide product leads to the production of different biologically active peptides. In turn, acting through the classical gastrin cholecystokinin B receptor CCK-BR, its isoforms and alternative receptors, these peptides trigger signalling pathways which influence the expression of downstream genes that affect cell survival, angiogenesis and invasion (Wank 1995, de Weerth et al. 1999, Grabowska & Watson 2007) View original pathway at:Reactome.

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Bibliography

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History

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CompareRevisionActionTimeUserComment
129720view01:33, 22 May 2024EweitzModified title
116412view09:06, 7 May 2021EweitzModified title
115053view16:59, 25 January 2021ReactomeTeamReactome version 75
113497view11:57, 2 November 2020ReactomeTeamReactome version 74
112697view16:09, 9 October 2020ReactomeTeamReactome version 73
101614view11:48, 1 November 2018ReactomeTeamreactome version 66
101150view21:34, 31 October 2018ReactomeTeamreactome version 65
100678view20:07, 31 October 2018ReactomeTeamreactome version 64
100228view16:52, 31 October 2018ReactomeTeamreactome version 63
99779view15:18, 31 October 2018ReactomeTeamreactome version 62 (2nd attempt)
99335view12:47, 31 October 2018ReactomeTeamreactome version 62
93801view13:37, 16 August 2017ReactomeTeamreactome version 61
93339view11:20, 9 August 2017ReactomeTeamreactome version 61
87453view14:00, 22 July 2016MkutmonOntology Term : 'signaling pathway' added !
86425view09:17, 11 July 2016ReactomeTeamreactome version 56
83266view10:35, 18 November 2015ReactomeTeamVersion54
81375view12:54, 21 August 2015ReactomeTeamVersion53
76844view08:07, 17 July 2014ReactomeTeamFixed remaining interactions
76548view11:53, 16 July 2014ReactomeTeamFixed remaining interactions
75881view09:53, 11 June 2014ReactomeTeamRe-fixing comment source
75581view10:41, 10 June 2014ReactomeTeamReactome 48 Update
74936view13:46, 8 May 2014AnweshaFixing comment source for displaying WikiPathways description
74580view08:37, 30 April 2014ReactomeTeamNew pathway

External references

DataNodes

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NameTypeDatabase referenceComment
5-HT2 receptor R-HSA-391030 (Reactome)
5HT MetaboliteCHEBI:28790 (ChEBI)
ADP MetaboliteCHEBI:16761 (ChEBI)
ADPMetaboliteCHEBI:16761 (ChEBI)
ADR MetaboliteCHEBI:28918 (ChEBI)
ADRA1A ProteinP35348 (Uniprot-TrEMBL)
ADRA1B ProteinP35368 (Uniprot-TrEMBL)
ADRA1D ProteinP25100 (Uniprot-TrEMBL)
ADRBK1 ProteinP25098 (Uniprot-TrEMBL)
ADRBK1ProteinP25098 (Uniprot-TrEMBL)
AGT(34-41) ProteinP01019 (Uniprot-TrEMBL)
AGTR1 ProteinP30556 (Uniprot-TrEMBL)
ANXA1 ProteinP04083 (Uniprot-TrEMBL)
APP(672-713) ProteinP05067 (Uniprot-TrEMBL)
ARHGEF25 ProteinQ86VW2 (Uniprot-TrEMBL)
ATP MetaboliteCHEBI:15422 (ChEBI)
ATPMetaboliteCHEBI:15422 (ChEBI)
AVP(20-28) ProteinP01185 (Uniprot-TrEMBL)
AVPR1A ProteinP37288 (Uniprot-TrEMBL)
AVPR1A,B R-HSA-388458 (Reactome)
AVPR1B ProteinP47901 (Uniprot-TrEMBL)
AcCho MetaboliteCHEBI:15355 (ChEBI)
Acyl Ghrelin R-HSA-422096 (Reactome)
Alpha-1 adrenoceptor R-HSA-390684 (Reactome)
BDKRB1 ProteinP46663 (Uniprot-TrEMBL)
BDKRB2 ProteinP30411 (Uniprot-TrEMBL)
BRS3 ProteinP32247 (Uniprot-TrEMBL)
BUT MetaboliteCHEBI:30772 (ChEBI)
Basic L-amino acids R-ALL-420746 (Reactome)
Bombesin-like peptide R-HSA-375360 (Reactome)
Bombesin-like receptor R-HSA-375362 (Reactome)
Bradykinin ProteinP01042 (Uniprot-TrEMBL)
Bradykinin receptor R-HSA-374323 (Reactome)
CASR ProteinP41180 (Uniprot-TrEMBL)
CCK ProteinP06307 (Uniprot-TrEMBL)
CCKAR ProteinP32238 (Uniprot-TrEMBL)
CCKBR ProteinP32239 (Uniprot-TrEMBL)
CCKBRProteinP32239 (Uniprot-TrEMBL)
CCL23-2 ProteinP55773-2 (Uniprot-TrEMBL)
CH3COO- MetaboliteCHEBI:15366 (ChEBI)
CHRM1 ProteinP11229 (Uniprot-TrEMBL)
CHRM1, 3, 5 R-HSA-390660 (Reactome)
CHRM3 ProteinP20309 (Uniprot-TrEMBL)
CHRM5 ProteinP08912 (Uniprot-TrEMBL)
CREB1ProteinP16220 (Uniprot-TrEMBL)
CYSLTR1 ProteinQ9Y271 (Uniprot-TrEMBL)
CYSLTR2 ProteinQ9NS75 (Uniprot-TrEMBL)
Ca2+ MetaboliteCHEBI:29108 (ChEBI)
Carboxylate ligands of FFAR2 R-ALL-444210 (Reactome)
Carboxylate ligands of FFAR3 R-ALL-444074 (Reactome)
Catecholamine R-ALL-390627 (Reactome)
Cholecystokinin receptors R-HSA-388518 (Reactome)
Cysteinyl leukotriene receptors R-HSA-416385 (Reactome)
Cysteinyl leukotrienes R-ALL-416372 (Reactome)
DAG MetaboliteCHEBI:17815 (ChEBI)
DAGMetaboliteCHEBI:17815 (ChEBI)
DDCX MetaboliteCHEBI:30805 (ChEBI)
DecS-GHRL-1(24-50) ProteinQ9UBU3-1 (Uniprot-TrEMBL)
DecS-GHRL-1(24-51) ProteinQ9UBU3-1 (Uniprot-TrEMBL)
EDN1 ProteinP05305 (Uniprot-TrEMBL)
EDN2 ProteinP20800 (Uniprot-TrEMBL)
EDN3(97-117) ProteinP14138 (Uniprot-TrEMBL)
EDNRA ProteinP25101 (Uniprot-TrEMBL)
EDNRB ProteinP24530 (Uniprot-TrEMBL)
EGFRProteinP00533 (Uniprot-TrEMBL)
Effects of PIP2 hydrolysisPathwayR-HSA-114508 (Reactome) Hydrolysis of phosphatidyl inositol-bisphosphate (PIP2) by phospholipase C (PLC) produces diacylglycerol (DAG) and inositol triphosphate (IP3). Both are potent second messengers. IP3 diffuses into the cytosol, but as DAG is a hydrophobic lipid it remains within the plasma membrane. IP3 stimulates the release of calcium ions from the smooth endoplasmic reticulum, while DAG activates the conventional and unconventional protein kinase C (PKC) isoforms, facilitating the translocation of PKC from the cytosol to the plasma membrane. The effects of DAG are mimicked by tumor-promoting phorbol esters. DAG is also a precursor for the biosynthesis of prostaglandins, the endocannabinoid 2-arachidonoylglycerol and an activator of a subfamily of TRP-C (Transient Receptor Potential Canonical) cation channels 3, 6, and 7.
Endothelin R-HSA-388544 (Reactome)
Endothelin receptor R-HSA-388547 (Reactome)
EtCOO- or C2H5COO- MetaboliteCHEBI:30768 (ChEBI)
F2R(27-425) ProteinP25116 (Uniprot-TrEMBL) This is the inactive form of the receptor, before protease activation. Proteinase (protease) activated receptors are activated by the cleavage of an N-terminal extracellular segment by serine proteases, particularly thrombin which activates PAR1, 3 and 4. The cleaved fragment is an activating ligand for the receptor; synthetic peptide mimics of the N-terminal fragment can activate uncleaved receptors.
F2RL1(37-397) ProteinP55085 (Uniprot-TrEMBL) This is the inactive form of the receptor, before protease activation. Proteinase (protease) activated receptors are activated by the cleavage of an N-terminal extracellular segment by serine proteases, particularly thrombin which activates PAR1, 3 and 4. The cleaved fragment is an activating ligand for the receptor; synthetic peptide mimics of the N-terminal fragment can activate uncleaved receptors.
F2RL2(22-374) ProteinO00254 (Uniprot-TrEMBL) This is the inactive form of the receptor, before protease activation. Proteinase (protease) activated receptors are activated by the cleavage of an N-terminal extracellular segment by serine proteases, particularly thrombin which activates PAR1, 3 and 4. The cleaved fragment is an activating ligand for the receptor; synthetic peptide mimics of the N-terminal fragment can activate uncleaved receptors.
F2RL3(18-385) ProteinQ96RI0 (Uniprot-TrEMBL) This is the inactive form of the receptor, before protease activation. Proteinase (protease) activated receptors are activated by the cleavage of an N-terminal extracellular segment by serine proteases, particularly thrombin which activates PAR1, 3 and 4. The cleaved fragment is an activating ligand for the receptor; synthetic peptide mimics of the N-terminal fragment can activate uncleaved receptors.
FFAR1 ProteinO14842 (Uniprot-TrEMBL)
FFAR2 ProteinO15552 (Uniprot-TrEMBL)
FFAR3 ProteinO14843 (Uniprot-TrEMBL)
FPR2 ProteinP25090 (Uniprot-TrEMBL)
FPRL1 ligands R-HSA-444472 (Reactome)
G-protein alpha (q):GRK2ComplexR-HSA-416515 (Reactome)
G-protein alpha (q):GRK5ComplexR-HSA-416517 (Reactome)
G-protein alpha (q/11): GTPComplexR-HSA-114534 (Reactome)
G-protein alpha (q/11):GDPComplexR-HSA-114556 (Reactome)
G-protein alpha (q/11):PI3K alphaComplexR-HSA-416356 (Reactome)
G-protein alpha

(q/11):Trio family

RhoGEFs		ComplexR-HSA-400608 (Reactome)
G-protein alpha (q/11)ComplexR-HSA-374848 (Reactome)
G-protein beta-gamma complexComplexR-HSA-167434 (Reactome)
GAST(76-92) ProteinP01350 (Uniprot-TrEMBL)
GAST(76-92)ProteinP01350 (Uniprot-TrEMBL)
GCGR ProteinP47871 (Uniprot-TrEMBL)
GDP MetaboliteCHEBI:17552 (ChEBI)
GDPMetaboliteCHEBI:17552 (ChEBI)
GHSR ProteinQ92847 (Uniprot-TrEMBL)
GNA11 ProteinP29992 (Uniprot-TrEMBL)
GNA14 ProteinO95837 (Uniprot-TrEMBL)
GNA15 ProteinP30679 (Uniprot-TrEMBL)
GNAQ ProteinP50148 (Uniprot-TrEMBL)
GNB1 ProteinP62873 (Uniprot-TrEMBL)
GNB2 ProteinP62879 (Uniprot-TrEMBL)
GNB3 ProteinP16520 (Uniprot-TrEMBL)
GNB4 ProteinQ9HAV0 (Uniprot-TrEMBL)
GNB5 ProteinO14775 (Uniprot-TrEMBL)
GNG10 ProteinP50151 (Uniprot-TrEMBL)
GNG11 ProteinP61952 (Uniprot-TrEMBL)
GNG12 ProteinQ9UBI6 (Uniprot-TrEMBL)
GNG13 ProteinQ9P2W3 (Uniprot-TrEMBL)
GNG2 ProteinP59768 (Uniprot-TrEMBL)
GNG3 ProteinP63215 (Uniprot-TrEMBL)
GNG4 ProteinP50150 (Uniprot-TrEMBL)
GNG5 ProteinP63218 (Uniprot-TrEMBL)
GNG7 ProteinO60262 (Uniprot-TrEMBL)
GNG8 ProteinQ9UK08 (Uniprot-TrEMBL)
GNGT1 ProteinP63211 (Uniprot-TrEMBL)
GNGT2 ProteinO14610 (Uniprot-TrEMBL)
GNRH ligands R-HSA-873938 (Reactome)
GNRH1(24-33) ProteinP01148 (Uniprot-TrEMBL)
GNRH2(24-33) ProteinO43555 (Uniprot-TrEMBL)
GNRHR ProteinP30968 (Uniprot-TrEMBL)
GNRHR2 ProteinQ96P88 (Uniprot-TrEMBL)
GPCRs that activate Gq/11ComplexR-HSA-791493 (Reactome)
GPR132 ProteinQ9UNW8 (Uniprot-TrEMBL)
GPR17 ProteinQ13304 (Uniprot-TrEMBL)
GPR4 ProteinP46093 (Uniprot-TrEMBL)
GPR65 ProteinQ8IYL9 (Uniprot-TrEMBL)
GPR68 ProteinQ15743 (Uniprot-TrEMBL)
GPRC6A ProteinQ5T6X5 (Uniprot-TrEMBL)
GPRC6A ligands R-ALL-420706 (Reactome)
GRB2-1 ProteinP62993-1 (Uniprot-TrEMBL)
GRB2-1:SOS1ComplexR-HSA-109797 (Reactome)
GRB2:SOS1:HB-EGF:p-6Y-EGFRComplexR-HSA-2179409 (Reactome)
GRK5 ProteinP34947 (Uniprot-TrEMBL)
GRK5ProteinP34947 (Uniprot-TrEMBL)
GRM1 ProteinQ13255 (Uniprot-TrEMBL)
GRM5 ProteinP41594 (Uniprot-TrEMBL)
GRP(24-50) ProteinP07492 (Uniprot-TrEMBL)
GRPR ProteinP30550 (Uniprot-TrEMBL)
GTP MetaboliteCHEBI:15996 (ChEBI)
GTPMetaboliteCHEBI:15996 (ChEBI)
Gastrin:CCKBRComplexR-HSA-870262 (Reactome)
Glucagon ProteinP01275 (Uniprot-TrEMBL)
GnRH receptor R-HSA-391368 (Reactome)
Group I Metabotropic glutamate receptors R-HSA-420566 (Reactome)
H+ MetaboliteCHEBI:15378 (ChEBI)
HB-EGF:p-6Y-EGFR dimerComplexR-HSA-2179410 (Reactome)
HBEGF(149-208)ProteinQ99075 (Uniprot-TrEMBL)
HBEGF(20-208)ProteinQ99075 (Uniprot-TrEMBL)
HBEGF(20-62)ProteinQ99075 (Uniprot-TrEMBL)
HBEGF(63-148) ProteinQ99075 (Uniprot-TrEMBL)
HBEGF(63-148)ProteinQ99075 (Uniprot-TrEMBL)
HCOOH MetaboliteCHEBI:30751 (ChEBI)
HCRT(34-66) ProteinO43612 (Uniprot-TrEMBL)
HCRT(70-97) ProteinO43612 (Uniprot-TrEMBL)
HCRTR1 ProteinO43613 (Uniprot-TrEMBL)
HCRTR2 ProteinO43614 (Uniprot-TrEMBL)
HRAS ProteinP01112 (Uniprot-TrEMBL)
HRH1 ProteinP35367 (Uniprot-TrEMBL)
HTR2A ProteinP28223 (Uniprot-TrEMBL)
HTR2B ProteinP41595 (Uniprot-TrEMBL)
HTR2C ProteinP28335 (Uniprot-TrEMBL)
HXA MetaboliteCHEBI:17120 (ChEBI)
Heterotrimeric

G-protein Gq/11

(inactive)		ComplexR-HSA-114557 (Reactome)
Hist MetaboliteCHEBI:18295 (ChEBI)
I(1,4,5)P3MetaboliteCHEBI:16595 (ChEBI)
KALRN ProteinO60229 (Uniprot-TrEMBL)
KISS1(68-121) ProteinQ15726 (Uniprot-TrEMBL)
KISS1R ProteinQ969F8 (Uniprot-TrEMBL)
KRAS ProteinP01116 (Uniprot-TrEMBL)
L-Glu MetaboliteCHEBI:16015 (ChEBI)
LPA MetaboliteCHEBI:52288 (ChEBI)
LPA-binding EDG receptors R-HSA-419369 (Reactome)
LPAR1 ProteinQ92633 (Uniprot-TrEMBL)
LPAR2 ProteinQ9HBW0 (Uniprot-TrEMBL)
LPAR3 ProteinQ9UBY5 (Uniprot-TrEMBL)
LPAR4 ProteinQ99677 (Uniprot-TrEMBL)
LPAR5 ProteinQ9H1C0 (Uniprot-TrEMBL)
LPAR6 ProteinP43657 (Uniprot-TrEMBL)
LTB4 MetaboliteCHEBI:15647 (ChEBI)
LTB4 receptors R-HSA-416401 (Reactome)
LTB4R ProteinQ15722 (Uniprot-TrEMBL)
LTB4R2 ProteinQ9NPC1 (Uniprot-TrEMBL)
LTC4 MetaboliteCHEBI:16978 (ChEBI)
LTD4 MetaboliteCHEBI:28666 (ChEBI)
LTE4 MetaboliteCHEBI:15650 (ChEBI)
LXA4 MetaboliteCHEBI:6498 (ChEBI)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (active)		ComplexR-HSA-749447 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (inactive)		ComplexR-HSA-749451 (Reactome)
Ligand:GPCR

complexes that

activate Gq/11		ComplexR-HSA-380110 (Reactome)
Ligands of FFAR1 (GPR40) R-ALL-400427 (Reactome)
Ligands of GPCRs that activate Gq/11ComplexR-HSA-791492 (Reactome)
MCHR1 ProteinQ99705 (Uniprot-TrEMBL)
MCHR2 ProteinQ969V1 (Uniprot-TrEMBL)
MLN(26-47) ProteinP12872 (Uniprot-TrEMBL)
MLNR ProteinO43193 (Uniprot-TrEMBL)
MMP3ProteinP08254 (Uniprot-TrEMBL)
MT-RNR2 ProteinQ8IVG9 (Uniprot-TrEMBL)
Melanin-concentrating hormone receptors R-HSA-947667 (Reactome)
NAd MetaboliteCHEBI:18357 (ChEBI)
NMB(47-56) ProteinP08949 (Uniprot-TrEMBL)
NMBR ProteinP28336 (Uniprot-TrEMBL)
NMS ProteinQ5H8A3 (Uniprot-TrEMBL)
NMU ProteinP48645 (Uniprot-TrEMBL)
NMUR1 ProteinQ9HB89 (Uniprot-TrEMBL)
NMUR2 ProteinQ9GZQ4 (Uniprot-TrEMBL)
NPFF(69-76) ProteinO15130 (Uniprot-TrEMBL)
NPFFR1 ProteinQ9GZQ6 (Uniprot-TrEMBL)
NPFFR2 ProteinQ9Y5X5 (Uniprot-TrEMBL)
NPS(1-467) ProteinP0C0P6 (Uniprot-TrEMBL)
NPSR1 ProteinQ6W5P4 (Uniprot-TrEMBL)
NRAS ProteinP01111 (Uniprot-TrEMBL)
NTS(151-163) ProteinP30990 (Uniprot-TrEMBL)
NTSR1 ProteinP30989 (Uniprot-TrEMBL)
NTSR2 ProteinO95665 (Uniprot-TrEMBL)
Neuromedin-U receptors R-HSA-964805 (Reactome)
Neuropeptide FF receptor R-HSA-389406 (Reactome)
Neurotensin receptor R-HSA-388917 (Reactome)
O-octanoyl-L-serine-GHRL-1(24-50) ProteinQ9UBU3-1 (Uniprot-TrEMBL)
O-octanoyl-L-serine-GHRL-1(24-51) ProteinQ9UBU3-1 (Uniprot-TrEMBL)
OLEA MetaboliteCHEBI:16196 (ChEBI)
OPN4 ProteinQ9UHM6 (Uniprot-TrEMBL)
OXT(20-28) ProteinP01178 (Uniprot-TrEMBL)
OXTR ProteinP30559 (Uniprot-TrEMBL)
P2RY1 ProteinP47900 (Uniprot-TrEMBL)
P2RY10 ProteinO00398 (Uniprot-TrEMBL)
P2RY11 ProteinQ96G91 (Uniprot-TrEMBL)
P2RY2 ProteinP41231 (Uniprot-TrEMBL)
P2RY6 ProteinQ15077 (Uniprot-TrEMBL)
PAF MetaboliteCHEBI:52450 (ChEBI)
PALM MetaboliteCHEBI:15756 (ChEBI)
PGE2 MetaboliteCHEBI:15551 (ChEBI)
PGF2a MetaboliteCHEBI:15553 (ChEBI)
PI(4,5)P2MetaboliteCHEBI:18348 (ChEBI)
PI3K alphaComplexR-HSA-198379 (Reactome)
PIK3CA ProteinP42336 (Uniprot-TrEMBL)
PIK3R1 ProteinP27986 (Uniprot-TrEMBL)
PIK3R2 ProteinO00459 (Uniprot-TrEMBL)
PIK3R3 ProteinQ92569 (Uniprot-TrEMBL)
PLC beta:G alpha (q/11)ComplexR-HSA-398158 (Reactome)
PLC-betaComplexR-HSA-111854 (Reactome)
PLCB1 ProteinQ9NQ66 (Uniprot-TrEMBL)
PLCB2 ProteinQ00722 (Uniprot-TrEMBL)
PLCB3 ProteinQ01970 (Uniprot-TrEMBL)
PLCB4 ProteinQ15147 (Uniprot-TrEMBL)
PMCH(147-165) ProteinP20382 (Uniprot-TrEMBL)
PRKCA ProteinP17252 (Uniprot-TrEMBL)
PRKCAProteinP17252 (Uniprot-TrEMBL)
PROK1 ProteinP58294 (Uniprot-TrEMBL)
PROK2 ProteinQ9HC23 (Uniprot-TrEMBL)
PROKR1 ProteinQ8TCW9 (Uniprot-TrEMBL)
PROKR2 ProteinQ8NFJ6 (Uniprot-TrEMBL)
PTAFR ProteinP25105 (Uniprot-TrEMBL)
PTGER1 ProteinP34995 (Uniprot-TrEMBL)
PTGFR ProteinP43088 (Uniprot-TrEMBL)
Pentadecanoic acid MetaboliteCHEBI:42504 (ChEBI)
Phospho-Ribosomal protein S6 kinaseComplexR-HSA-199849 (Reactome)
Photon R-NUL-419777 (Reactome)
Prokineticin R-HSA-444692 (Reactome)
Prokineticin receptors R-HSA-444628 (Reactome)
Protein Kinase C, alpha type: DAGComplexR-HSA-422275 (Reactome)
Proteinase-activated receptors R-HSA-389458 (Reactome)
QRFP ProteinP83859 (Uniprot-TrEMBL)
QRFPR ProteinQ96P65 (Uniprot-TrEMBL)
RAF/MAP kinase cascadePathwayR-HSA-5673001 (Reactome) The RAS-RAF-MEK-ERK pathway regulates processes such as proliferation, differentiation, survival, senescence and cell motility in response to growth factors, hormones and cytokines, among others. Binding of these stimuli to receptors in the plasma membrane promotes the GEF-mediated activation of RAS at the plasma membrane and initiates the three-tiered kinase cascade of the conventional MAPK cascades. GTP-bound RAS recruits RAF (the MAPK kinase kinase), and promotes its dimerization and activation (reviewed in Cseh et al, 2014; Roskoski, 2010; McKay and Morrison, 2007; Wellbrock et al, 2004). Activated RAF phosphorylates the MAPK kinase proteins MEK1 and MEK2 (also known as MAP2K1 and MAP2K2), which in turn phophorylate the proline-directed kinases ERK1 and 2 (also known as MAPK3 and MAPK1) (reviewed in Roskoski, 2012a, b; Kryiakis and Avruch, 2012). Activated ERK proteins may undergo dimerization and have identified targets in both the nucleus and the cytosol; consistent with this, a proportion of activated ERK protein relocalizes to the nucleus in response to stimuli (reviewed in Roskoski 2012b; Turjanski et al, 2007; Plotnikov et al, 2010; Cargnello et al, 2011). Although initially seen as a linear cascade originating at the plasma membrane and culminating in the nucleus, the RAS/RAF MAPK cascade is now also known to be activated from various intracellular location. Temporal and spatial specificity of the cascade is achieved in part through the interaction of pathway components with numerous scaffolding proteins (reviewed in McKay and Morrison, 2007; Brown and Sacks, 2009).
The importance of the RAS/RAF MAPK cascade is highlighted by the fact that components of this pathway are mutated with high frequency in a large number of human cancers. Activating mutations in RAS are found in approximately one third of human cancers, while ~8% of tumors express an activated form of BRAF (Roberts and Der, 2007; Davies et al, 2002; Cantwell-Dorris et al, 2011).
RGS proteins active for G alpha (q)ComplexR-HSA-921123 (Reactome)
RGS18 ProteinQ9NS28 (Uniprot-TrEMBL)
RGS19 ProteinP49795 (Uniprot-TrEMBL)
RGS2 ProteinP41220 (Uniprot-TrEMBL)
RGS21 ProteinQ2M5E4 (Uniprot-TrEMBL)
RGZ MetaboliteCHEBI:50122 (ChEBI)
RPS6KA1 ProteinQ15418 (Uniprot-TrEMBL)
RPS6KA2 ProteinQ15349 (Uniprot-TrEMBL)
RPS6KA3 ProteinP51812 (Uniprot-TrEMBL)
Ribosomal protein S6 kinaseComplexR-HSA-199858 (Reactome)
SAA1(19-122) ProteinP0DJI8 (Uniprot-TrEMBL)
SOS1 ProteinQ07889 (Uniprot-TrEMBL)
TAC1(58-68) ProteinP20366 (Uniprot-TrEMBL)
TAC1(98-107) ProteinP20366 (Uniprot-TrEMBL)
TAC3 ProteinQ9UHF0 (Uniprot-TrEMBL)
TACR1 ProteinP25103 (Uniprot-TrEMBL)
TACR2 ProteinP21452 (Uniprot-TrEMBL)
TACR3 ProteinP29371 (Uniprot-TrEMBL)
TBXA2R ProteinP21731 (Uniprot-TrEMBL)
TRH R-HSA-444529 (Reactome)
TRH(114-116) ProteinP20396 (Uniprot-TrEMBL)
TRH(135-137) ProteinP20396 (Uniprot-TrEMBL)
TRH(152-154) ProteinP20396 (Uniprot-TrEMBL)
TRH(186-188) ProteinP20396 (Uniprot-TrEMBL)
TRH(227-229) ProteinP20396 (Uniprot-TrEMBL)
TRH(84-86) ProteinP20396 (Uniprot-TrEMBL)
TRHR ProteinP34981 (Uniprot-TrEMBL)
TRIO ProteinO75962 (Uniprot-TrEMBL)
TRIO family RhoGEFsComplexR-HSA-399963 (Reactome)
TXA2 MetaboliteCHEBI:15627 (ChEBI)
UDP MetaboliteCHEBI:17659 (ChEBI)
UTS2 ProteinO95399 (Uniprot-TrEMBL)
UTS2B ProteinQ765I0 (Uniprot-TrEMBL)
UTS2R ProteinQ9UKP6 (Uniprot-TrEMBL)
Urotensin 2, 2B R-HSA-445115 (Reactome)
Valerate MetaboliteCHEBI:31011 (ChEBI)
XC1 ligands R-HSA-373356 (Reactome)
XCL1 ProteinP47992 (Uniprot-TrEMBL)
XCL2 ProteinQ9UBD3 (Uniprot-TrEMBL)
XCR1 ProteinP46094 (Uniprot-TrEMBL)
p-4S,T231,T365-RPS6KA3 ProteinP51812 (Uniprot-TrEMBL)
p-4S,T356,T570-RPS6KA2 ProteinQ15349 (Uniprot-TrEMBL)
p-4S,T359,T573-RPS6KA1 ProteinQ15418 (Uniprot-TrEMBL)
p-6Y-EGFR ProteinP00533 (Uniprot-TrEMBL)
p-ERK1/2/5ComplexR-HSA-199878 (Reactome)
p-S133-CREB1ProteinP16220 (Uniprot-TrEMBL)
p-T185,Y187-MAPK1 ProteinP28482 (Uniprot-TrEMBL)
p-T202,Y204-MAPK3 ProteinP27361 (Uniprot-TrEMBL)
p-T218,Y220-MAPK7 ProteinQ13164 (Uniprot-TrEMBL)
p21 RAS:GDPComplexR-HSA-109796 (Reactome)
p21 RAS:GTPComplexR-HSA-109783 (Reactome)
pH sensing receptors R-HSA-444736 (Reactome)
thrombin heavy chain ProteinP00734 (Uniprot-TrEMBL)
thrombin light chain ProteinP00734 (Uniprot-TrEMBL)

Annotated Interactions

View all...
SourceTargetTypeDatabase referenceComment
ADPArrowR-HSA-198746 (Reactome)
ADPArrowR-HSA-199895 (Reactome)
ADRBK1R-HSA-416516 (Reactome)
ATPR-HSA-198746 (Reactome)
ATPR-HSA-199895 (Reactome)
CCKBRR-HSA-870269 (Reactome)
CREB1R-HSA-199895 (Reactome)
DAGArrowR-HSA-114688 (Reactome)
DAGR-HSA-400015 (Reactome)
EGFRR-HSA-2179387 (Reactome)
G-protein alpha (q):GRK2ArrowR-HSA-416516 (Reactome)
G-protein alpha (q):GRK5ArrowR-HSA-416510 (Reactome)
G-protein alpha (q/11): GTPArrowR-HSA-749452 (Reactome)
G-protein alpha (q/11): GTPR-HSA-398188 (Reactome)
G-protein alpha (q/11): GTPR-HSA-400586 (Reactome)
G-protein alpha (q/11): GTPR-HSA-416358 (Reactome)
G-protein alpha (q/11): GTPR-HSA-416510 (Reactome)
G-protein alpha (q/11): GTPR-HSA-416516 (Reactome)
G-protein alpha (q/11): GTPR-HSA-418582 (Reactome)
G-protein alpha (q/11):GDPArrowR-HSA-418582 (Reactome)
G-protein alpha (q/11):GDPR-HSA-750993 (Reactome)
G-protein alpha (q/11):PI3K alphaArrowR-HSA-416358 (Reactome)
G-protein alpha

(q/11):Trio family

RhoGEFs		ArrowR-HSA-400586 (Reactome)
G-protein alpha (q/11)mim-catalysisR-HSA-418582 (Reactome)
G-protein beta-gamma complexArrowR-HSA-749452 (Reactome)
G-protein beta-gamma complexR-HSA-750993 (Reactome)
GAST(76-92)R-HSA-870269 (Reactome)
GDPArrowR-HSA-2179407 (Reactome)
GDPArrowR-HSA-379048 (Reactome)
GPCRs that activate Gq/11ArrowR-HSA-749452 (Reactome)
GRB2-1:SOS1R-HSA-2179415 (Reactome)
GRB2:SOS1:HB-EGF:p-6Y-EGFRArrowR-HSA-2179415 (Reactome)
GRB2:SOS1:HB-EGF:p-6Y-EGFRmim-catalysisR-HSA-2179407 (Reactome)
GRK5R-HSA-416510 (Reactome)
GTPR-HSA-2179407 (Reactome)
GTPR-HSA-379048 (Reactome)
Gastrin:CCKBRArrowR-HSA-870269 (Reactome)
HB-EGF:p-6Y-EGFR dimerArrowR-HSA-2179387 (Reactome)
HB-EGF:p-6Y-EGFR dimerR-HSA-2179415 (Reactome)
HBEGF(149-208)ArrowR-HSA-2179402 (Reactome)
HBEGF(20-208)R-HSA-2179402 (Reactome)
HBEGF(20-62)ArrowR-HSA-2179402 (Reactome)
HBEGF(63-148)ArrowR-HSA-2179402 (Reactome)
HBEGF(63-148)R-HSA-2179387 (Reactome)
Heterotrimeric

G-protein Gq/11

(inactive)		ArrowR-HSA-750993 (Reactome)
Heterotrimeric

G-protein Gq/11

(inactive)		R-HSA-749448 (Reactome)
I(1,4,5)P3ArrowR-HSA-114688 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (active)		ArrowR-HSA-379048 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (active)		R-HSA-749452 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (inactive)		ArrowR-HSA-749448 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (inactive)		R-HSA-379048 (Reactome)
Ligand:GPCR

complexes that activate

Gq/11:Heterotrimeric G-protein Gq (inactive)		mim-catalysisR-HSA-379048 (Reactome)
Ligand:GPCR

complexes that

activate Gq/11		R-HSA-749448 (Reactome)
Ligands of GPCRs that activate Gq/11ArrowR-HSA-749452 (Reactome)
MMP3ArrowR-HSA-2179413 (Reactome)
MMP3mim-catalysisR-HSA-2179402 (Reactome)
PI(4,5)P2R-HSA-114688 (Reactome)
PI3K alphaR-HSA-416358 (Reactome)
PLC beta:G alpha (q/11)ArrowR-HSA-398188 (Reactome)
PLC beta:G alpha (q/11)mim-catalysisR-HSA-114688 (Reactome)
PLC-betaR-HSA-398188 (Reactome)
PRKCAR-HSA-400015 (Reactome)
Phospho-Ribosomal protein S6 kinaseArrowR-HSA-198746 (Reactome)
Phospho-Ribosomal protein S6 kinasemim-catalysisR-HSA-199895 (Reactome)
Protein Kinase C, alpha type: DAGArrowR-HSA-400015 (Reactome)
Protein Kinase C, alpha type: DAGmim-catalysisR-HSA-2179413 (Reactome)
R-HSA-114688 (Reactome) Phospholipase C (PLC) isozymes are a group of related proteins that cleave the polar head group from inositol phospholipids, typically in response to signals from cell surface receptors. They hydrolyze the highly phosphorylated lipid phosphatidylinositol 4,5-bisphosphate (PIP2) generating two products: inositol 1,4,5-trisphosphate (IP3), a universal calcium-mobilizing second messenger, and diacylglycerol (DAG), an activator of protein kinase C. PLC-beta isoforms are regulated by heterotrimeric GTP-binding proteins. PLC-beta 1 and 3 are widely expressed, with the highest concentrations found in (differing) specific regions of the brain. PLC-beta 2 is expressed at highest levels in cells of hematopoeitic origin; it is involved in leukocyte signaling and host defense. PLC-beta 4 is highly concentrated in cerebellar Purkinje and granule cells, the median geniculate body, whose axons terminate in the auditory cortex, and the lateral geniculate nucleus, where most retinal axons terminate in a visuotopic representation of each half of the visual field.
R-HSA-198746 (Reactome) The p90 ribosomal S6 kinases (RSK1-4) comprise a family of serine/threonine kinases that lie at the terminus of the ERK pathway. RSK family members are unusual among serine/threonine kinases in that they contain two distinct kinase domains, both of which are catalytically functional . The C-terminal kinase domain is believed to be involved in autophosphorylation, a critical step in RSK activation, whereas the N-terminal kinase domain, which is homologous to members of the AGC superfamily of kinases, is responsible for the phosphorylation of all known exogenous substrates of RSK.
RSKs can be activated by the ERKs (ERK1, 2, 5) in the cytoplasm as well as in the nucleus, they both have cytoplasmic and nuclear substrates, and they are able to move from nucleus to cytoplasm. Efficient RSK activation by ERKs requires its interaction through a docking site located near the RSK C terminus. The mechanism of RSK activation has been studied mainly with regard to ERK1 and ERK2. RSK activation leads to the phosphorylation of four essential residues Ser239, Ser381, Ser398, and Thr590, and two additional sites, Thr377 and Ser749 (the amino acid numbering refers to RSK1). ERK is thought to play at least two roles in RSK1 activation. First, activated ERK phosphorylates RSK1 on Thr590, and possibly on Thr377 and Ser381, and second, ERK brings RSK1 into close proximity to membrane-associated kinases that may phosphorylate RSK1 on Ser381 and Ser398.
Moreover, RSKs and ERK1/2 form a complex that transiently dissociates upon growth factor signalling. Complex dissociation requires phosphorylation of RSK1 serine 749, a growth factor regulated phosphorylation site located near the ERK docking site. Serine 749 is phosphorylated by the N-terminal kinase domain of RSK1 itself. ERK1/2 docking to RSK2 and RSK3 is also regulated in a similar way. The length of RSK activation following growth factor stimulation depends on the duration of the RSK/ERK complex, which, in turn, differs among the different RSK isoforms. RSK1 and RSK2 readily dissociate from ERK1/2 following growth factor stimulation stimulation, but RSK3 remains associated with active ERK1/2 longer, and also remains active longer than RSK1 and RSK2.

R-HSA-199895 (Reactome) CREB is phosphorylated at Serine 133 by RSK1/2/3.
R-HSA-2179387 (Reactome) The heparin-binding EGF growth factor (HBEGF) is a member of the EGF family of growth factors that binds to and activates the EGF receptor EGFR/ErbB1 and ErbB4 (not shown here) (Higashiyama et al. 1991, Elenius et al. 1997). The details which describe receptor dimerisation on ligand binding and autophosphorylation from experiments in mice have been omitted here.
R-HSA-2179402 (Reactome) Gastrin can induce cleavage of pro-HBEGF via MMP3, releasing mature HBEGF. This event is based on evidence from mouse experiments (Suzuki et al. 1997).
R-HSA-2179407 (Reactome) SOS1 is the guanine nucleotide exchange factor (GEF) for RAS. SOS1 activates RAS nucleotide exchange from the inactive form (bound to GDP) to an active form (bound to GTP) (Chardin et al. 1993).
R-HSA-2179413 (Reactome) Gastrin activated PKC pathway leads to the induction of matrix metalloproteinase 3 (MMP3) synthesis (Reuben et al. 2002). The cleavage and autocatalysis steps to obtain the fully activated form of MMP3 have been omitted here.
R-HSA-2179415 (Reactome) Cytoplasmic target proteins containing the SH2 domain can bind to activated EGFR. One such protein, growth factor receptor-bound protein 2 (GRB2), can bind activated EGFR with its SH2 domain whilst in complex with SOS through its SH3 domain. GRB2 can bind at either Y1068 and/or Y1086 autophosphorylation sites on the receptor (Batzer et al. 1994, Okutani et al. 1994).
R-HSA-379048 (Reactome) G alpha q protein (or Gq/11) consists of four family members (G-alpha 11, -alpha 14, -alpha 15 and -alpha q). It activates phospholipase C (PLC) (Dowal L et al, 2006). PLC hydrolyzes phosphatidylinositol (PIP2) to diacyl glycerol (DAG) and inositol triphosphate (IP3). DAG acts as a second messenger that activates protein kinase C (PKC) and IP3 can bind to IP3 receptors, particular calcium channels in the endoplasmic reticulum (ER). Calcium flow causes the cytosolic concentration of calcium to increase, causing a cascade of intracellular changes and activity.
R-HSA-398188 (Reactome) The active form of G protein alpha subunit q (Gq-alpha) was found to activate phospholipase C beta-1 (PLC-beta1), in investigations using bovine membranes. Subsequently, all 4 human isoforms have been shown to be activated by Gq, though activation of PLCbeta-4 is limited. In recombinant assays, several activated rat G alpha q family members were found to stimulate human PLC-beta isoforms with the same rank order of decreasing potency. PLC-beta1 stimulation was slightly more than for PLC-beta3; PLC-beta3 stimulation was 10-fold greater than for beta-2. PLC-beta2 is expressed specifically in hematopoietic cells. PLC-beta acts directly on Gq to accelerate hydrolysis of bound GTP, thus PLC-betas are GTPase activating proteins (GAPs). The crystal structure of the C-terminal region from Turkey PLC-beta, revealed a novel fold composed almost entirely of three long helices forming a coiled-coil that dimerizes along its long axis in an antiparallel orientation. The extent of the dimer interface and gel exclusion chromatography data suggest that PLC-betas are functionally dimeric.
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-400586 (Reactome) The Trio family of RhoA guanine nucleotide exchange factors (RhoGEFs) are directly activated by G alpha (q), possibly within a Gq:Trio:RhoA signalling complex, thereby linking Gq to RhoA-mediated processes such as cell migration, proliferation, and contraction. Like most other RhoGEFs, they have a tandem motif consisting of a Dbl homology (DH) and a pleckstrin homology (PH) domain. Trio and Duet have a number of other domains including an immunoglobin domains that may be involved in interacting with Rho, but the considerably smaller GEFT (p63RhoGEF) does not have any identifiable additional domains yet appears to be sufficient to mediate the activation of RhoA by G alpha (q). The structure represented by GEFT is proposed to represent the core of an ancient signal transduction pathway.
R-HSA-416358 (Reactome) Phospholipase C activation is the classical signalling route for G alpha (q) but an additional mechanism is an inhibitory interaction between G alpha (q) and phosphatidylinositol 3-kinase alpha (PI3K alpha). There are several PI3K subtypes but only the p85 alpha/p110 alpha subtype (PI3K alpha) is a G alpha (q) effector (PMID: 18515384). Activated G alpha (q) inhibits PI3K alpha directly, in a GTP-dependent manner. G alpha(q) binding of PI3K competes with Ras, a PI3K activator (PMID: 16268778).
R-HSA-416510 (Reactome) GRKs are serine/threonine kinases that phosphorylate GPCRs leading to receptor desensitization. GRK5 appears to be the predominant regulator of PAR1 desensitization in endothelial cells.
R-HSA-416516 (Reactome) GRK2 can inhibit GPCR signaling via phosphorylation-independent sequestration of Gq/11/14 subunits utilising its RGS homology (RH) domain. GRK2 may be an effector of activated Gq, initiating signalling cascades other than the classical PLC beta signalling associated with Gq.
R-HSA-418582 (Reactome) When a ligand activates a G protein-coupled receptor, it induces a conformational change in the receptor (a change in shape) that allows the receptor to function as a guanine nucleotide exchange factor (GEF), stimulating the exchange of GDP for GTP on the G alpha subunit. In the traditional view of heterotrimeric protein activation, this exchange triggers the dissociation of the now active G alpha subunit from the beta:gamma dimer, initiating downstream signalling events. The G alpha subunit has intrinsic GTPase activity and will eventually hydrolyze the attached GTP to GDP, allowing reassociation with G beta:gamma. Additional GTPase-activating proteins (GAPs) stimulate the GTPase activity of G alpha, leading to more rapid termination of the transduced signal. In some cases the downstream effector may have GAP activity, helping to deactivate the pathway. This is the case for phospholipase C beta, which possesses GAP activity within its C-terminal region.
R-HSA-749448 (Reactome) Numerous functionally unrelated GPCRs couple with the Gq G-protein subtype.
R-HSA-749452 (Reactome) The classical view of G-protein signalling is that the G-protein alpha subunit dissociates from the beta:gamma dimer. Activated G alpha (q) and the beta:gamma dimer then participate in separate signaling cascades. Although G protein dissociation has been contested (e.g. Bassi et al. 1996), recent in vivo experiments have demonstrated that dissociation does occur, though possibly not to completion (Lambert 2008).
R-HSA-750993 (Reactome) The classical model of G-protein signaling suggests that the G-protein dissociates upon GPCR activation. The active G alpha (q) subunit then participates in signaling, until its intrinsic GTPase activity degrades the bound GTP to GDP. The inactive G alpha (q):GDP complex has much higher affinity for the G beta:gamma complex and consequently reassociates.
R-HSA-870269 (Reactome) Gastrin receptors (gastric cholecystokinin B receptor, CCK-BR) mediate acid secretion from parietal cells, release of histamine from enterochromaffin-like (ECL) cells and contraction of smooth muscle (Ito et al. 1993).The hormone gastrin is the central regulator of gastric acid secretion and in addition, plays a prominent role in regulation of growth and differentiation of gastric and colonic mucosa.
RGS proteins active for G alpha (q)ArrowR-HSA-418582 (Reactome)
Ribosomal protein S6 kinaseR-HSA-198746 (Reactome)
TRIO family RhoGEFsR-HSA-400586 (Reactome)
p-ERK1/2/5mim-catalysisR-HSA-198746 (Reactome)
p-S133-CREB1ArrowR-HSA-199895 (Reactome)
p21 RAS:GDPR-HSA-2179407 (Reactome)
p21 RAS:GTPArrowR-HSA-2179407 (Reactome)
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