Description General description Histone H2A is one of the 5 main histone proteins involved in the structure of chromatin in eukaryotic cells. Featuring a main globular domain and a long N terminal tail H2A is involved with the structure of the nucleosomes of the ′beads on a string′ structure. Specificity Broad species cross-reactivity expected based on conservation of sequence homology. Histone H2A.X phosphorylated at Ser139. Immunogen Epitope: a.a. 134-142 Application Anti-phospho-H2A.X (Ser139) Antibody is a Rabbit Polyclonal Antibody for detection of phospho-H2A.X (Ser139) also known as histone 2 H2ac, histone IIa & has been validated in IP & WB. Immunoprecipitation: A previous lot of this antibody successfully immunoprecipitated phosphorylated H2A.X as determined by an independent laboratory. Target description 15 kDa Physical form Format: Purified Storage and Stability Stable for 1 year at -20°C from date of receipt. Handling Recommendations: Upon receipt, and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance. Note: Variability in freezer temperatures below -20°C may cause glycerol-containing solutions to become frozen during storage. Quality Routinely evaluated by Western Blot on untreated and staurosporine treated Jurkat lysate. Western Blot Analysis: 1:500 dilution of this lot detected phospho-H2A.X on 10 μg of staurosporine treated Jurkat lysate. Linkage Replaces: MABE205 Analysis Note Control Staurosporine-treated Jurkat lysate, UV-treated HT-29 cells, doxorubicin-treated HT-29 cells. Other Notes Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.