G Protein Coupled Receptor Kinase 3

A ubiquitously expressed G-Protein-coupled receptor Kinase subtype that has specificity for the agonist-occupied form of beta-Adrenergic Receptors and a variety of other G-Protein-Coupled Receptors. Although it is highly homologous to G-Protein-Coupled Receptor Kinase 2, it is not considered to play an essential Role in regulating myocardial contractile response.