GRK3 or beta-adrenergic receptor kinase 2 specifically phosphorylates the agonist-occupied form of the beta-adrenergic and related G protein-coupled receptors. GRK3 is a member of the receptor kinase family that broadly serves to regulate receptor function (1). GRK3 has 85% amino acid similarity with beta adrenergic receptor kinase 1, with the protein kinase catalytic domain having 95% similarity. GRK3 is highly expressed in lung, heart, and adipose tissue (2). Single nucleotide polymorphisms (SNPs) in the promoter region of GRK3 have been associated with bipolar disorder.
1. Benovic, J. L. et.al: Cloning, expression, and chromosomal localization of beta-adrenergic receptor kinase 2: a new member of the receptor kinase family. J. Biol. Chem. 266: 14939-14946, 1991.
2. Parruti, G. et.al: Molecular cloning, functional expression and mRNA analysis of human beta-adrenergic receptor kinase 2. Biochem. Biophys. Res. Commun. 190: 475-481, 1993.
Sample Kinase Activity Plot. For specific information on a given lot, see related technical data sheet.
Sample Purity Data. For specific information on a given lot, see related technical data sheet.
Storage, Stability and Shipping:
Store product at –70oC. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.
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