GRK6 Human Recombinant Protein

This gene encodes a member of the guanine nucleotide-binding protein (G protein)-coupled receptor kinase subfamily of the Ser/Thr protein kinase family. The protein phosphorylates the activated forms of G protein-coupled receptors thus initiating their deactivation. Several transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

GRK6: Specifically phosphorylates the activated forms of G protein-coupled receptors. Such receptor phosphorylation initiates beta-arrestin-mediated receptor desensitization, internalization, and signaling events leading to their desensitization. Seems to be involved in the desensitization of D2-like dopamin receptors in striatum and chemokine receptor CXCR4 which is critical for CXCL12-induced cell chemotaxis. Phosphorylates rhodopsin (RHO) (in vitro) and a non G-protein-coupled receptor: LRP6 during Wnt signaling (in vitro). Widely expressed. Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. GPRK subfamily. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Kinase, protein; Protein kinase, AGC; Protein kinase, Ser/Thr (non-receptor); EC 2.7.11.16; AGC group; GRK family; GRK subfamily

Chromosomal Location of Human Ortholog: 5q35

Cellular Component: membrane

Molecular Function: G-protein coupled receptor kinase activity; protein binding; ATP binding

Biological Process: Wnt receptor signaling pathway; protein amino acid phosphorylation; regulation of G-protein coupled receptor protein signaling pathway