Anti-PRM1 antibodies are used in the immunodetection of the protein protamine 1. In humans, the canonical protein has a reported length of 51 amino acid residues and a mass of 6.8 kDa. Its subcellular localization is in the nucleus and chromosomes. It is notably expressed in the testis. A member of the Protamine P1 protein family, PRM1 is known to be involved with spermatogenesis. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include P1, sperm protamine P1, cancer/testis antigen family 94, member 1, cysteine-rich protamine, testicular tissue protein Li 91, and CT94.1. PRM1 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. A number of PRM1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunofluorescence are also common applications.