Rap1 signaling (Homo sapiens)
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Description
Rap1 (Ras-proximate-1) is a small G protein in the Ras superfamily. Like all G proteins, Rap1 is activated when bound GDP is exchanged for GTP. Rap1 is targeted to lipid membranes by the covalent attachment of lipid moieties to its carboxyl terminus. Movement of Rap1 from endosomal membranes to the plasma membrane upon activation has been reported in several cell types including Jurkat T cells and megakaryocytes. On activation, Rap1 undergoes conformational changes that facilitate recruitment of a variety of effectors, triggering it's participation in integrin signaling, ERK activation, and others.
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Ontology Terms
Bibliography
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- Stork PJ, Dillon TJ.; ''Multiple roles of Rap1 in hematopoietic cells: complementary versus antagonistic functions.''; PubMed Europe PMC Scholia
- Schultess J, Danielewski O, Smolenski AP.; ''Rap1GAP2 is a new GTPase-activating protein of Rap1 expressed in human platelets.''; PubMed Europe PMC Scholia
- Hoffmeister M, Riha P, Neumüller O, Danielewski O, Schultess J, Smolenski AP.; ''Cyclic nucleotide-dependent protein kinases inhibit binding of 14-3-3 to the GTPase-activating protein Rap1GAP2 in platelets.''; PubMed Europe PMC Scholia
- Polakis PG, Rubinfeld B, Evans T, McCormick F.; ''Purification of a plasma membrane-associated GTPase-activating protein specific for rap1/Krev-1 from HL60 cells.''; PubMed Europe PMC Scholia
- Kawasaki H, Springett GM, Toki S, Canales JJ, Harlan P, Blumenstiel JP, Chen EJ, Bany IA, Mochizuki N, Ashbacher A, Matsuda M, Housman DE, Graybiel AM.; ''A Rap guanine nucleotide exchange factor enriched highly in the basal ganglia.''; PubMed Europe PMC Scholia
- Kurachi H, Wada Y, Tsukamoto N, Maeda M, Kubota H, Hattori M, Iwai K, Minato N.; ''Human SPA-1 gene product selectively expressed in lymphoid tissues is a specific GTPase-activating protein for Rap1 and Rap2. Segregate expression profiles from a rap1GAP gene product.''; PubMed Europe PMC Scholia
- Lafuente E, Boussiotis VA.; ''Rap1 regulation of RIAM and cell adhesion.''; PubMed Europe PMC Scholia
- Cook SJ, Rubinfeld B, Albert I, McCormick F.; ''RapV12 antagonizes Ras-dependent activation of ERK1 and ERK2 by LPA and EGF in Rat-1 fibroblasts.''; PubMed Europe PMC Scholia
- Hu CD, Kariya Ki, Kotani G, Shirouzu M, Yokoyama S, Kataoka T.; ''Coassociation of Rap1A and Ha-Ras with Raf-1 N-terminal region interferes with ras-dependent activation of Raf-1.''; PubMed Europe PMC Scholia
- Crittenden JR, Bergmeier W, Zhang Y, Piffath CL, Liang Y, Wagner DD, Housman DE, Graybiel AM.; ''CalDAG-GEFI integrates signaling for platelet aggregation and thrombus formation.''; PubMed Europe PMC Scholia
- Lafuente EM, van Puijenbroek AA, Krause M, Carman CV, Freeman GJ, Berezovskaya A, Constantine E, Springer TA, Gertler FB, Boussiotis VA.; ''RIAM, an Ena/VASP and Profilin ligand, interacts with Rap1-GTP and mediates Rap1-induced adhesion.''; PubMed Europe PMC Scholia
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External references
DataNodes
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Name | Type | Database reference | Comment |
---|---|---|---|
14-3-3 beta,
zeta | Protein | REACT_24076 (Reactome) | |
3',5'-Cyclic AMP | Metabolite | 17489 (ChEBI) | |
ADP | Metabolite | 16761 (ChEBI) | |
ATP | Metabolite | 15422 (ChEBI) | |
CalDAG-GEFs | Protein | REACT_18194 (Reactome) | Rap1 can be activated by certain GEFs that respond to calcium and diacylglycerol (CalDAG-GEFs). |
GDP | Metabolite | 17552 (ChEBI) | |
GTP | Metabolite | 15996 (ChEBI) | |
PKA catalytic
subunits, PKG type I | Protein | REACT_24087 (Reactome) | |
Raf-1 | Protein | P04049 (UniProt) | |
Rap1 GTPase-
activating protein 2 | Protein | Q684P5 (UniProt) | |
Rap1 cAMP-GEFs | Protein | REACT_17998 (Reactome) | |
Rap1 cAMP-GEFs:
cAMP | Complex | REACT_24050 (Reactome) | |
Rap1-GDP | Complex | REACT_15771 (Reactome) | |
Rap1-GTP | Complex | REACT_16044 (Reactome) | |
Rap1-GTP:Raf1 | Complex | REACT_24874 (Reactome) | |
p(S7)-Rap1 GTPase-
activating protein 2 | Protein | Q684P5 (UniProt) | |
p(S7)-Rap1 GTPase-
activating protein 2: 14-3-3beta, zeta | Complex | REACT_24434 (Reactome) | |
pyrophosphate | Metabolite | 29888 (ChEBI) |
Annotated Interactions
No annotated interactions