Here are recombinant proteins for H2AFB1, the approved symbol for the human gene, 'H2A histone family member B1'. With a Uniprot ID of P0C5Y9, this protein is listed as having 115 residues in length and a mass of 12.7 kDa. The following protein function has been assigned: 'Atypical histone H2A which can replace conventional H2A in some nucleosomes and is associated with active transcription and mRNA processing.' A subcellular localization as 'nuclear' is noted. Orthologs are reported in these species: mouse. H2AFB1 may also be known by other designations: 'histone H2A-Bbd type 1, H2A Barr body-deficient'.