Steroidogenic factor 1 is a reported alias of the human protein 'nuclear receptor subfamily 5 group A member 1', encoded by the gene NR5A1. Anti-Steroidogenic factor 1 antibodies are available from several suppliers. The full protein is reported to be 461 amino acid residues in length. Based on antigen name, there may be porcine, monkey, mouse and rat variants of this protein. See the antibody supplier page for important details, including specific immunogenicity and validated applications.