Anti-phospho-Histone H2AX (pSer139) antibody produced in rabbit has been used in immunofluorescence and western blotting.
H2AX comprises 2-25% of the total H2A complement in human cells, whereas in the budding yeast it constitutes virtually all of the H2A molecules. It has N-terminal and C-terminal region with a central globular domain. The C-terminal region has sites for modification including acetylation, biotinylation and phosphorylation.
H2AX is critical for facilitating the assembly of specific DNA-repair complexes on damaged DNA. Ataxia-telangiectasia-mutated (ATM) is the major kinase involved in the phosphorylation of H2AX in response to DNA double-strand breaks. H2AX knockout mice are radiation sensitive and show retarted growth. They also are immune deficient with mutant males are infertile..
