Ready-to-use ELISA kits are available for the detection of BARRES, an alias of the protein, arrestin beta 1. The official gene symbol is ARRB1. The kits can detect several species variants of the protein, including: human, rat, chicken, primate, guinea pig, and other mammalian. The protein, with a mass of 47.1 kDa and length of 418 residues, is reported to be cytoplasmic, nuclear and membrane-associated. It is a member of the Arrestin family and may be known by other names, including: ARB1, non-visual arrestin-2, arrestin 2, and beta-arrestin-1.