ADRB1

G protein-coupled receptor for catecholamines that couples to G(s) proteins to activate adenylate cyclase and cAMP-dependent pathway. Binds epinephrine and norepinephrine with approximately equal affinity. Mediates the activation of Ras via binding with cAMP-dependent RAPGEF2. As part of the sympathetic nervous system, plays a role in the physiologic regulation of cardiac functions such as stimulation of cardiomyocyte contraction. Also delivers proapoptotic signals in cardiomyocytes (By similarity). Involved in the regulation of sleep/wake behaviors..

Function from UniProtKB (P08588), read 2026-09-23. CC BY 4.0.