Anti-RNA binding motif protein Y-linked family 1 member A1 antibodies are used for the immunodetection of the protein encoded by the RBMY1A1 gene. In humans, the canonical protein has a reported length of 496 amino acid residues and a mass of 55.8 kDa. Its subcellular localization is in the nucleus. Alternative splicing is reported to yield 3 different isoforms for this protein. It is reported to have testis-specific expression. It is a reported RNA-binding protein involved in pre-mRNA splicing. Other names for this target antigen include RBM1, RBM2, RBMY, RBMY1C, YRRM1, YRRM2, RNA-binding motif protein, Y chromosome, family 1 member A1, and RBM.