Regulator of G-protein signaling 14 (RGS14) is a protein that in humans is encoded by the RGS14gene.[5]
Function
RGS14 is a member of the regulator of G protein signalling family. This protein contains one RGS domain, two Raf-like Ras-binding domains (RBDs), and one GoLoco motif. The protein attenuates the signaling activity of G-proteins by binding, through its GoLoco domain, to specific types of activated, GTP-bound G alpha subunits. Acting as a GTPase activating protein (GAP), the protein increases the rate of conversion of the GTP to GDP. This hydrolysis allows the G alpha subunits to bind G beta/gamma subunit heterodimers, forming inactive G-protein heterotrimers, thereby terminating the signal. Alternate transcriptional splice variants of this gene have been observed but have not been thoroughly characterized.[5]
^Shu FJ, Ramineni S, Amyot W, Hepler JR (January 2007). "Selective interactions between Gi alpha1 and Gi alpha3 and the GoLoco/GPR domain of RGS14 influence its dynamic subcellular localization". Cell. Signal. 19 (1): 163–76. doi:10.1016/j.cellsig.2006.06.002. PMID16870394.
Further reading
Snow BE, Antonio L, Suggs S, et al. (1997). "Molecular cloning and expression analysis of rat Rgs12 and Rgs14". Biochem. Biophys. Res. Commun. 233 (3): 770–7. doi:10.1006/bbrc.1997.6537. PMID9168931.
Cho H, Kozasa T, Takekoshi K, et al. (2000). "RGS14, a GTPase-activating protein for Gialpha, attenuates Gialpha- and G13alpha-mediated signaling pathways". Mol. Pharmacol. 58 (3): 569–76. doi:10.1124/mol.58.3.569. PMID10953050.
Sierra DA, Gilbert DJ, Householder D, et al. (2002). "Evolution of the regulators of G-protein signaling multigene family in mouse and human". Genomics. 79 (2): 177–85. doi:10.1006/geno.2002.6693. PMID11829488. S2CID16065132.
Hollinger S, Ramineni S, Hepler JR (2003). "Phosphorylation of RGS14 by protein kinase A potentiates its activity toward G alpha i.". Biochemistry. 42 (3): 811–9. doi:10.1021/bi026664y. PMID12534294.
Shu FJ, Ramineni S, Amyot W, Hepler JR (2007). "Selective interactions between Gialpha1 and Gialpha3 and the GoLoco/GPR domain of RGS14 influence its dynamic subcellular localization". Cellular Signalling. 19 (1): 941–49. doi:10.1016/j.cellsig.2006.06.002. PMID16870394.
Shu FJ, Ramineni S, Hepler JR (2009). "RGS14 is multifunctional scaffold that integrates G protein and Ras/Raf MAPkinase signaling pathways". Cellular Signalling: in press.
External links
Overview of all the structural information available in the PDB for UniProt: O43566 (Regulator of G-protein signaling 14) at the PDBe-KB.