Beta-adrenergic receptor kinase 1 - P21146 (ARBK1_BOVIN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P21146: 8
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. (data source: UniProt  )
Catalytic Activity

ATP + [beta-adrenergic receptor] = ADP + [beta-adrenergic receptor] phosphate.

(data source: UniProt  )
Subunit structure
Interacts with GIT1. Interacts with, and phosphorylates chemokine-stimulated CCR5. Interacts with ARRB1. Interacts with LPAR1 and LPAR2. Interacts with RALA in response to LPAR1 activation. ADRBK1 and RALA mutually inhibit each other's binding to LPAR1. (data source: UniProt  )
The PH domain binds anionic phospholipids and helps recruiting ADRBK1 from the cytoplasm to plasma membrane close to activated receptors. It mediates binding to G protein beta and gamma subunits, competing with G-apha subunits and other G-betagamma effectors. (data source: UniProt  )
Other Gene names: ADRBK1 GRK2
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