Phospho-gamma-H2AX (Ser139) Polyclonal Antibody, Bethyl Laboratories

Catalog No.
50-155-6859	20 μL; Unconjugated

Catalog No. 50-155-6859 Supplier Bethyl Laboratories, Inc Supplier No. A300081AT

Description

Rabbit Polyclonal Antibody

The recommended shelf life for this product is 1 year from date of receipt. Application Note: For ICC, formaldehyde fixation is recommended. Permeabilization with Triton-X 100 is recommended for formaldehyde-fixed cells. For IHC, epitope retrieval with citrate buffer pH 6.0 is recommended for FFPE tissue sections.

Histone H2A.X (H2AX) is a member of the histone H2A family which is one of the four core histones making up the nucleosome core particle. In eukaryotes, DNA double strand breaks (DSBs) have been shown to trigger the phosphorylation of serine 139 at the carboxy terminus of histone H2AX resulting in gamma-H2AX. The phosphorylation of H2AX can be detected by Western blotting or immunofluorescence, revealing the frequency of DSBs. The phosphatidylinositol 3-kinases have been implicated in H2AX phosphorylation, but it is unclear if ATM is the primary H2AX kinase or if other members of the family such as DNA-PK and ATR contribute in a similar manner. Structurally, H2A.x contains 143 amino acid residues. Histone H2A.X is considered a basal histone, being synthesized in G1 as well as in S-phase, and its mRNA contains polyA addition motifs and a polyA tail along with the conserved stem-loop and U7 binding sequences involved in the processing and stability of replication type histone mRNAs. There are two forms of Histone H2A.X mRNA, one about 1600 bases long and contains polyA; the other about 575 bases long, lacking polyA. The short form behaves as a replication type histone mRNA, while the longer behaves as a basal type histone mRNA. Histone H2A.X maps to the 11q23.2-q23.3 region of the human chromosome. Histone H2A.x contributes to histone-formation and therefore the structure of DNA. Histone H2A variant H2A.x specifically regulates the interaction of MDC1 (mediator of DNA damage checkpoint protein 1), a DNA repair protein to the sites of DNA damage.

Specifications

• Antigen: Phospho-gamma-H2AX (Ser139)
• Applications: Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Western Blot
• Classification: Polyclonal
• Conjugate: Unconjugated
• Formulation: TBS with 0.1% BSA and 0.09% sodium azide
• Gene: H2AFX
• Gene Accession No.: P16104, P27661
• Gene Alias: H2A/X, H2AX, H2AX histone, histone H2AX
• Gene Symbols: H2afx
• Host Species: Rabbit
• Immunogen: Surrounding serine 140
• Purification Method: Antigen affinity chromatography
• Quantity: 20 μL
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 15270, 3014
• Target Species: Human, Mouse
• Content And Storage: 4° C
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG