Anti-RBM1 antibodies are protein reagents that detect specific antigens. The RBM1 antigen is another term for the human protein RNA binding motif protein Y-linked family 1 member A1, encoded by the RBMY1A1 gene. The protein is a reported RNA-binding protein involved in pre-mRNA splicing. Canonically, it has an amino acid length of 496 residues and a mass of 55.8 kilodaltons. Its subcellular localization is in the nucleus and it is reported to have testis-specific expression.