cDNA cloning and chromosomal localization of the human α‐adrenergic receptor kinase

Abstract
The β‐adrenergic receptor kinase (βARK) mediates agonist‐dependent phosphorylation of the β2‐adrenergic and related G protein‐coupled receptors. A cDNA encoding bovine βARK has recently been isolated. In this work we have isolated a cDNA encoding human βARK from a retinal cDNA library. The cDNA encodes a protein of 689 amino acids with an overall 98.0% amino acid and 92.5% nucleotide identity with bovine βARK. Chromosomal location of the human βARK gene was determined by correlating the presence of the βARK locus with retention of a specific human chromosome in a rodent‐human hybrid panel. This analysis revealed that the human βARK locus segregated with the long arm of chromosome 11, centromeric to 11q13.