Specifically phosphorylates the agonist-occupied form of the beta-adrenergic and closely related receptors, probably inducing a desensitization of them. Key regulator of LPAR1 signaling. Competes with RALA for binding to LPAR1 thus affecting the signaling properties of the receptor. Desensitizes LPAR1 and LPAR2 in a phosphorylation-independent manner.
[1] cDNA cloning and chromosomal localization of the human beta-adrenergic receptor kinase.Benovic J.L., Stone W.C., Huebner K., Croce C., Caron M.G., Lefkowitz R.J.FEBS Lett. 283:122-126(1991) [2] High expression of beta-adrenergic receptor kinase in