Anti-B1AR antibodies enable researchers to detect and measure the B1AR antigen in biological samples. This target is a reported synonym of the ADRB1 gene, which encodes adrenoceptor beta 1. This protein is known to function in brown fat cell differentiation, among other biological roles. The human version of B1AR has a canonical amino acid length of 477 residues and a protein mass of 51.3 kilodaltons. It is reported to be localized in the cell membrane of cells and notably expressed in the heart muscle and kidney. Other names for this target antigen include ADRB1R and BETA1AR. ELISA and Western Blot are common applications for B1AR antibodies.