Aliases for RGS4 Gene
External Ids for RGS4 Gene
Previous HGNC Symbols for RGS4 Gene
Previous GeneCards Identifiers for RGS4 Gene
Regulator of G protein signaling (RGS) family members are regulatory molecules that act as GTPase activating proteins (GAPs) for G alpha subunits of heterotrimeric G proteins. RGS proteins are able to deactivate G protein subunits of the Gi alpha, Go alpha and Gq alpha subtypes. They drive G proteins into their inactive GDP-bound forms. Regulator of G protein signaling 4 belongs to this family. All RGS proteins share a conserved 120-amino acid sequence termed the RGS domain. Regulator of G protein signaling 4 protein is 37% identical to RGS1 and 97% identical to rat Rgs4. This protein negatively regulate signaling upstream or at the level of the heterotrimeric G protein and is localized in the cytoplasm. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jul 2008]
GeneCards Summary for RGS4 Gene
RGS4 (Regulator Of G-Protein Signaling 4) is a Protein Coding gene. Diseases associated with RGS4 include schizophrenia. Among its related pathways are Signaling by GPCR and Activation of cAMP-Dependent PKA. GO annotations related to this gene include calmodulin binding and GTPase activator activity. An important paralog of this gene is RGS18.
UniProtKB/Swiss-Prot for RGS4 Gene
Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Activity on G(z)-alpha is inhibited by phosphorylation of the G-protein. Activity on G(z)-alpha and G(i)-alpha-1 is inhibited by palmitoylation of the G-protein
Heterotrimeric G proteins are membrane bound GTPases that are linked to 7-TM receptors. Each G protein contains an alpha-, beta- and gamma-subunit and is bound to GDP in the 'off' state. Ligand-receptor binding results in detachment of the G protein, switching it to an 'on' state and permitting Galpha activation of second messenger signalling cascades. Regulators of G protein signalling, such as RGS4, promote GTP hydrolysis by the alpha subunit in order to inactivate the G protein.