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Members of arrestin/beta-arrestin protein family are thought to participate in agonist-mediated desensitization of G-protein-coupled receptors and cause specific dampening of cellular responses to stimuli such as hormones, neurotransmitters, or sensory signals. Arrestin beta 1 is a cytosolic protein and acts as a cofactor in the beta-adrenergic receptor kinase (BARK) mediated desensitization of beta-adrenergic receptors. Besides the central nervous system, it is expressed at high levels in peripheral blood leukocytes, and thus the BARK/beta-arrestin system is believed to play a major role in regulating receptor-mediated immune functions. Alternatively spliced transcripts encoding different isoforms of arrestin beta 1 have been described.
Protein class


Predicted location


Single cell type specificity

Low cell type specificity

Immune cell specificity

Immune cell enhanced (non-classical monocyte)

Cell line specificity

Cell line enhanced (HEL, RH-30)


Monomer. Homodimer. Homooligomer; the self-association is mediated by InsP6-binding. Heterooligomer with ARRB2; the association is mediated by InsP6-binding. Interacts with GPR143. Interacts with ADRB2 (phosphorylated). Interacts with CHRM2 (phosphorylated). Interacts with LHCGR. Interacts with CYTH2 and CASR. Interacts with AP2B1 (dephosphorylated at 'Tyr-737'); phosphorylation of AP2B1 at 'Tyr-737' disrupts the interaction. Interacts (dephosphorylated at Ser-412) with CLTC. Interacts with CCR2 and GRK2. Interacts with CRR5. Interacts with PTAFR (phosphorylated on serine residues). Interacts with CLTC and MAP2K3. Interacts with CREB1. Interacts with TRAF6. Interacts with IGF1R and MDM2. Interacts with C5AR1. Interacts with PDE4D. Interacts with SRC (via the SH3 domain and the protein kinase domain); the interaction is independent of the phosphorylation state of SRC C-terminus. Interacts with TACR1. Interacts with RAF1. Interacts with CHUK, IKBKB and MAP3K14. Interacts with DVL1; the interaction is enhanced by phosphorylation of DVL1. Interacts with DVL2; the interaction is enhanced by phosphorylation of DVL2. Interacts with IGF1R. Associates with MAP kinase p38. Part of a MAPK signaling complex consisting of TACR1, ARRB1, SRC, MAPK1 (activated) and MAPK3 (activated). Part of a MAPK signaling complex consisting of F2RL1, ARRB1, RAF1, MAPK1 (activated) and MAPK3 (activated) (By similarity). Interacts with MAP2K4/MKK4. Interacts with HCK and CXCR1 (phosphorylated). Interacts with ACKR3 and ACKR4. Interacts with ARRDC1; the interaction is direct (PubMed:23886940). Interacts with GPR61, GPR62 and GPR135 (PubMed:28827538).

Molecular function

Signal transduction inhibitor

More Types Infomation

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