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Structural highlights

Function

[RGS14_MOUSE] Acts as a regulator of G protein signaling (RGS). Modulates G protein alpha subunits nucleotide exchange and hydrolysis activities by functioning either as a GTPase-activating protein (GAP), thereby driving G protein alpha subunits into their inactive GDP-bound form, or as a GDP-dissociation inhibitor (GDI). Confers GDI activity on G(i) alpha subunits GNAI1 and GNAI3, but not G(o) alpha subunit GNAO1 and G(i) alpha subunit GNAI2. Confers GAP activity on G(o) alpha subunit GNAI0 and G(i) alpha subunits GNAI2 and GNAI3. May act as a scaffold integrating G protein and Ras/Raf MAPkinase signaling pathways. Inhibits platelet-derived growth factor (PDGF)-stimulated ERK1/ERK2 phosphorylation; a process depending on its interaction with HRAS1 and that is reversed by G(i) alpha subunit GNAI1. Acts as a positive modulator of microtubule polymerisation and spindle organization through a G(i)-alpha-dependent mechanism. Plays a role in cell division; required for completion of the first mitotic division of the embryo. Involved in visual memory processing capacity; when overexpressed in the V2 secondary visual cortex area. Involved in hippocampal-based learning and memory; acts as a suppressor of synaptic plasticity in CA2 neurons. Required for the nerve growth factor (NGF)-mediated neurite outgrowth. Involved in stress resistance.^{[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.

See Also

• Regulator of G-protein signaling 3D structures

References

1. ↑ Traver S, Bidot C, Spassky N, Baltauss T, De Tand MF, Thomas JL, Zalc B, Janoueix-Lerosey I, Gunzburg JD. RGS14 is a novel Rap effector that preferentially regulates the GTPase activity of galphao. Biochem J. 2000 Aug 15;350 Pt 1:19-29. PMID:10926822
2. ↑ Traver S, Splingard A, Gaudriault G, De Gunzburg J. The RGS (regulator of G-protein signalling) and GoLoco domains of RGS14 co-operate to regulate Gi-mediated signalling. Biochem J. 2004 May 1;379(Pt 3):627-32. PMID:15112653 doi:http://dx.doi.org/10.1042/BJ20031889
3. ↑ Martin-McCaffrey L, Willard FS, Oliveira-dos-Santos AJ, Natale DR, Snow BE, Kimple RJ, Pajak A, Watson AJ, Dagnino L, Penninger JM, Siderovski DP, D'Souza SJ. RGS14 is a mitotic spindle protein essential from the first division of the mammalian zygote. Dev Cell. 2004 Nov;7(5):763-9. PMID:15525537 doi:http://dx.doi.org/10.1016/j.devcel.2004.10.004
4. ↑ Martin-McCaffrey L, Willard FS, Pajak A, Dagnino L, Siderovski DP, D'Souza SJ. RGS14 is a microtubule-associated protein. Cell Cycle. 2005 Jul;4(7):953-60. Epub 2005 Jul 28. PMID:15917656
5. ↑ 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
6. ↑ Lee SE, Simons SB, Heldt SA, Zhao M, Schroeder JP, Vellano CP, Cowan DP, Ramineni S, Yates CK, Feng Y, Smith Y, Sweatt JD, Weinshenker D, Ressler KJ, Dudek SM, Hepler JR. RGS14 is a natural suppressor of both synaptic plasticity in CA2 neurons and hippocampal-based learning and memory. Proc Natl Acad Sci U S A. 2010 Sep 28;107(39):16994-8. doi:, 10.1073/pnas.1005362107. Epub 2010 Sep 13. PMID:20837545 doi:http://dx.doi.org/10.1073/pnas.1005362107