Anti-H2A clustered histone 12 antibodies are used for the immunodetection of the protein encoded by the H2AC12 gene. In humans, the canonical protein has a reported length of 128 amino acid residues and a mass of 13.9 kDa. Its subcellular localization is in the nucleus and chromosomes. A member of the Histone H2A protein family, it is an important component of nucleosome. Post-translational modifications have been described, including ubiquitination, acetylation and phosphorylation. Other names for this target antigen include H2A histone family member, histone H2A/s, histone cluster 1 H2A family member h, histone cluster 1, H2ah, and histone H2A type 1-H. Gene orthologs have been identified in the mouse, rat and chimpanzee species.