GRK4 Antibody – Rabbit Polyclonal

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 its deactivation. This gene has been linked to both genetic and acquired hypertension. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013]

GRK4: Specifically phosphorylates the activated forms of G protein-coupled receptors. GRK4-alpha can phosphorylate rhodopsin and its activity is inhibited by calmodulin; the other three isoforms do not phosphorylate rhodopsin and do not interact with calmodulin. GRK4-alpha and GRK4-gamma phosphorylate DRD3. Phosphorylates ADRB2. Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. GPRK subfamily. 4 isoforms of the human protein are produced by alternative splicing.

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

Chromosomal Location of Human Ortholog: 4p16.3

Cellular Component: cell soma; dendrite; cell cortex; cytosol

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

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