Anti-BBS1 antibodies are used in the immunodetection of the protein Bardet-Biedl syndrome 1. In humans, the canonical protein has a reported length of 593 amino acid residues and a mass of 65.1 kDa. Its subcellular localization is in the cell projections and cytoplasm. Alternative splicing is reported to yield 3 different isoforms for this protein. It is reported to be highly expressed in the kidney. Among its functions, BBS1 is involved with cartilage development and the metabolism of lipids. Synonyms for this target antigen include Bardet-Biedl syndrome 1 protein, BBS2-like protein 2, and BBS2L2.