Anti-H2AC12 antibodies are used in the immunodetection of the protein H2A clustered histone 12. 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. It is notably widely expressed in many tissue types. A member of the Histone H2A protein family, H2AC12 is an important component of nucleosome. Post-translational modifications have been described, including ubiquitination, acetylation and phosphorylation. Synonyms 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. H2AC12 gene orthologs have been reported in the mouse, rat and chimpanzee species.