Anti-S Opsin antibodies are readily available from several suppliers. S Opsin is a reported synonym of the human protein 'opsin 1, short wave sensitive', encoded by the gene OPN1SW. The full protein is reported to be 348 amino acid residues in length. It is listed to be a member of the G-protein coupled receptor 1 family, Opsin subfamily. Consult the antibody supplier page for essential details, including target immunogenicity and tested applications.