Beta adrenergic receptor kinase-2

Adrenergic, beta, receptor kinase 2, also known as ADRBK2, is a human gene.

Beta adrenergic receptor kinase-2 (ARBK2, BARK-2, G-protein-coupled receptor kinase 3, GRK3) is an intracellular enzyme that phosphorylates G protein-coupled receptors. It was cloned from mice and rats in 1991,. The human gene was cloned in 1993.

In 2003, a group of American and Canadian researchers published a paper that used gene linkage techniques to identify a mutation in the GRK3 gene as a possible cause of up to 10% of cases of bipolar disorder. Beta adrenergic receptor kinase-2 appears to affect dopamine metabolism.

Subsequent studies, while noting that chromosome 22q12 may harbor a risk gene for schizophrenia, did not find that the gene coding for beta adrenergic receptor kinase-2 was linked to schizophrenia.