H2A.X antibody, H2A/X antibody, H2AX antibody, AW228881 antibody, H2ax antibody, Hist5-2ax antibody, gammaH2ax antibody, zgc:56329 antibody, h2a.x antibody, h2a/x antibody, h2ax antibody, RGD1566119 antibody, h2a antibody, h2afx antibody, H2A histone family member X antibody, H2A histone family, member X antibody, H2A histone family member X L homeolog antibody, histone cluster 1, H2ah antibody, histone cluster 2, H2ab S homeolog antibody, histone H2AX antibody, H2AFX antibody, H2afx antibody, h2afx antibody, h2afx.L antibody, HIST1H2AH antibody, hist2h2ab.S antibody, LOC100522201 antibody, LOC100720536 antibody
Background
Variant histone H2A which replaces conventional H2A in a subset of nucleosomes. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. Required for checkpoint-mediated arrest of cell cycle progression in response to low doses of ionizing radiation and for efficient repair of DNA double strand breaks (DSBs) specifically when modified by C- terminal phosphorylation.