Anti-catenin beta 1 antibodies are used in the immunodetection of the protein encoded by the CTNNB1 gene. In humans, the canonical protein has a reported length of 781 amino acid residues and a mass of 85.5 kDa. Its subcellular localization is in the cytoplasm. It is reported to be expressed in several hair follicle cell types: basal and peripheral matrix cells, and cells of the outer and inner root sheaths. A member of the Beta-catenin protein family, it is known to be involved with acinar cell differentiation and the apoptotic pathway. Post-translational modifications have been described, including O-glycosylation, ubiquitination, acetylation and phosphorylation. Other names for this target antigen include EVR7, MRD19, NEDSDV, armadillo, catenin (cadherin-associated protein), beta 1, 88kDa, and CTNNB.