Phosphorylation and recycling kinetics of G protein-coupled receptors.

Abstract excerpt

The rate of ligand-induced phosphorylation of the V2 and V1a vasopressin receptors was characterized in HEK 293 cells. Both receptors were phosphorylated predominantly by GRKs, and the V1a receptor was also phosphorylated by protein kinase C regardless of the presence or absence of ligand. Phosphorylation of the V1aR catalyzed by GRKs reached maximal values at the shortest measured time: 15 seconds, and decayed...

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