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Structural highlights

Function

RAP2A_HUMAN Small GTP-binding protein which cycles between a GDP-bound inactive and a GTP-bound active form. In its active form interacts with and regulates several effectors including MAP4K4, MINK1 and TNIK. Part of a signaling complex composed of NEDD4, RAP2A and TNIK which regulates neuronal dendrite extension and arborization during development. More generally, it is part of several signaling cascades and may regulate cytoskeletal rearrangements, cell migration, cell adhesion and cell spreading.^{[1] [2] [3] [4] [5] [6]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

References

1. ↑ Machida N, Umikawa M, Takei K, Sakima N, Myagmar BE, Taira K, Uezato H, Ogawa Y, Kariya K. Mitogen-activated protein kinase kinase kinase kinase 4 as a putative effector of Rap2 to activate the c-Jun N-terminal kinase. J Biol Chem. 2004 Apr 16;279(16):15711-4. Epub 2004 Feb 13. PMID:14966141 doi:10.1074/jbc.C300542200
2. ↑ Taira K, Umikawa M, Takei K, Myagmar BE, Shinzato M, Machida N, Uezato H, Nonaka S, Kariya K. The Traf2- and Nck-interacting kinase as a putative effector of Rap2 to regulate actin cytoskeleton. J Biol Chem. 2004 Nov 19;279(47):49488-96. Epub 2004 Sep 1. PMID:15342639 doi:10.1074/jbc.M406370200
3. ↑ Mittal V, Linder ME. Biochemical characterization of RGS14: RGS14 activity towards G-protein alpha subunits is independent of its binding to Rap2A. Biochem J. 2006 Feb 15;394(Pt 1):309-15. PMID:16246175 doi:10.1042/BJ20051086
4. ↑ Greco F, Ciana A, Pietra D, Balduini C, Minetti G, Torti M. Rap2, but not Rap1 GTPase is expressed in human red blood cells and is involved in vesiculation. Biochim Biophys Acta. 2006 Mar;1763(3):330-5. Epub 2006 Feb 28. PMID:16540189 doi:10.1016/j.bbamcr.2006.02.001
5. ↑ Nonaka H, Takei K, Umikawa M, Oshiro M, Kuninaka K, Bayarjargal M, Asato T, Yamashiro Y, Uechi Y, Endo S, Suzuki T, Kariya K. MINK is a Rap2 effector for phosphorylation of the postsynaptic scaffold protein TANC1. Biochem Biophys Res Commun. 2008 Dec 12;377(2):573-8. doi:, 10.1016/j.bbrc.2008.10.038. Epub 2008 Oct 18. PMID:18930710 doi:10.1016/j.bbrc.2008.10.038
6. ↑ Kawabe H, Neeb A, Dimova K, Young SM Jr, Takeda M, Katsurabayashi S, Mitkovski M, Malakhova OA, Zhang DE, Umikawa M, Kariya K, Goebbels S, Nave KA, Rosenmund C, Jahn O, Rhee J, Brose N. Regulation of Rap2A by the ubiquitin ligase Nedd4-1 controls neurite development. Neuron. 2010 Feb 11;65(3):358-72. doi: 10.1016/j.neuron.2010.01.007. PMID:20159449 doi:10.1016/j.neuron.2010.01.007