Here are recombinant proteins for H2AFB3, the approved symbol for the human gene, 'H2A histone family member B3'. With a Uniprot ID of P0C5Z0, this protein is listed as having 115 residues in length and a mass of 12.8 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, rat. H2AFB3 may also be known by other designations: 'histone H2A-Bbd type 2/3, H2A Barr body-deficient, H2A.Bbd, histone variant H2A, Barr-body deficient'.