Recombinant proteins for H2A histone family member B2 are available from various sources. In humans, this protein has a Uniprot ID of P0C5Z0 and has an annotated function: 'Atypical histone H2A which can replace conventional H2A in some nucleosomes and is associated with active transcription and mRNA processing.' This protein is 115 amino acids in length and 12.8 kilodaltons in mass. It has been designated a subcellular localization as: nuclear. This protein is encoded by the gene H2AFB2. Other names also exist, such as: histone H2A-Bbd type 2/3, H2A Barr body deficient. This protein is conserved in other species, including: mouse, rat.