Anti-H2A.W histone antibodies enable researchers to detect and measure the H2A.W histone antigen in biological samples. This target is a reported synonym of the H2AC25 gene, which encodes H2A clustered histone 25. This protein is an important component of nucleosome. The human version of H2A.W histone has a canonical amino acid length of 130 residues and a protein mass of 14.1 kilodaltons. It is reported to be localized in the nucleus and chromosomes of cells and widely expressed in many tissue types. H2A.W histone is a member of the Histone H2A protein family.