ESP1 is a reported alias of the human protein 'extra spindle pole bodies like 1, separase', encoded by the gene ESPL1. Anti-ESP1 antibodies are available from several suppliers. The full protein is reported to be 2120 amino acid residues in length. Based on antigen name, there may be canine, porcine, monkey, mouse and rat variants of this protein. See the antibody supplier page for important details, including specific immunogenicity and validated applications.