Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Nucleosomes consist of approximately 146 bp of DNA wrapped around a histone octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene is intronless and encodes a member of the histone H2A family. Transcripts from this gene lack polyA tails, instead, they contain a palindromic termination element. This gene is found in the large histone gene cluster on chromosome 6p22-p21.3. Alias Symbols: H2A.1, H2A.2, H2A/a, H2AFA Protein Interaction Partner: UBC, HUWE1, SUZ12, EZH2, ITGA4, CAND1, COPS5, CUL1, CUL4A, CUL4B, CUL5, NFX1, NEDD8, TONSL, SUMO1, EID1, UHRF1, NAP1L4, Protein Size: 130