Anti-ADRB1 antibodies are used in the immunodetection of the protein adrenoceptor beta 1. In humans, the canonical protein has a reported length of 477 amino acid residues and a mass of 51.3 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in the heart muscle and kidney. A member of the G-protein coupled receptor 1 protein family, ADRB1 is known to be involved with brown fat cell differentiation. Post-translational modifications have been described, including phosphorylation and glycosylation. Synonyms for this target antigen include B1AR, BETA1AR, FNSS2, RHR, beta-1 adrenergic receptor, adrenergic, beta-1-, receptor, beta-1 adrenoceptor, and ADRB1R. ADRB1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.