Key features and details
- Rabbit polyclonal to Histone H2A.X
- Suitable for: WB, IHC-P, ICC/IF
- Reacts with: Human
- Isotype: IgG
Product nameAnti-Histone H2A.X antibody
See all Histone H2A.X primary antibodies
DescriptionRabbit polyclonal to Histone H2A.X
Tested applicationsSuitable for: WB, IHC-P, ICC/IFmore details
Species reactivityReacts with: Human
Predicted to work with: Mouse, Rat
Synthetic peptide within Human H2A.X pSer139 . The exact sequence is proprietary. Amino acids surrounding Ser 139. (NCBI Accession No. NP_002096.1)
Database link: P16104
- HepG2 and 293 cell lysates; Human testis and colon tissues; HeLa cells.
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Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 49% PBS, 50% Glycerol, 0.87% Sodium chloride
PBS (without Mg2+, Ca2+)
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab188819 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Predicted molecular weight: 15 kDa.|
|IHC-P||Use a concentration of 10 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
|ICC/IF||Use at an assay dependent concentration.|
FunctionVariant 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.
Sequence similaritiesBelongs to the histone H2A family.
Developmental stageSynthesized in G1 as well as in S-phase.
DomainThe [ST]-Q motif constitutes a recognition sequence for kinases from the PI3/PI4-kinase family.
modificationsPhosphorylated on Ser-140 (to form gamma-H2AFX or H2AX139ph) in response to DNA double strand breaks (DSBs) generated by exogenous genotoxic agents and by stalled replication forks, and may also occur during meiotic recombination events and immunoglobulin class switching in lymphocytes. Phosphorylation can extend up to several thousand nucleosomes from the actual site of the DSB and may mark the surrounding chromatin for recruitment of proteins required for DNA damage signaling and repair. Widespread phosphorylation may also serve to amplify the damage signal or aid repair of persistent lesions. Phosphorylation of Ser-140 (H2AX139ph) in response to ionizing radiation is mediated by both ATM and PRKDC while defects in DNA replication induce Ser-140 phosphorylation (H2AX139ph) subsequent to activation of ATR and PRKDC. Dephosphorylation of Ser-140 by PP2A is required for DNA DSB repair. In meiosis, Ser-140 phosphorylation (H2AX139ph) may occur at synaptonemal complexes during leptotene as an ATM-dependent response to the formation of programmed DSBs by SPO11. Ser-140 phosphorylation (H2AX139ph) may subsequently occurs at unsynapsed regions of both autosomes and the XY bivalent during zygotene, downstream of ATR and BRCA1 activation. Ser-140 phosphorylation (H2AX139ph) may also be required for transcriptional repression of unsynapsed chromatin and meiotic sex chromosome inactivation (MSCI), whereby the X and Y chromosomes condense in pachytene to form the heterochromatic XY-body. During immunoglobulin class switch recombination in lymphocytes, Ser-140 phosphorylation (H2AX139ph) may occur at sites of DNA-recombination subsequent to activation of the activation-induced cytidine deaminase AICDA. Phosphorylation at Tyr-143 (H2AXY142ph) by BAZ1B/WSTF determines the relative recruitment of either DNA repair or pro-apoptotic factors. Phosphorylation at Tyr-143 (H2AXY142ph) favors the recruitment of APBB1/FE65 and pro-apoptosis factors such as MAPK8/JNK1, triggering apoptosis. In contrast, dephosphorylation of Tyr-143 by EYA proteins (EYA1, EYA2, EYA3 or EYA4) favors the recruitment of MDC1-containing DNA repair complexes to the tail of phosphorylated Ser-140 (H2AX139ph).
Monoubiquitination of Lys-120 (H2AXK119ub) by RING1 and RNF2/RING2 complex gives a specific tag for epigenetic transcriptional repression. Following DNA double-strand breaks (DSBs), it is ubiquitinated through 'Lys-63' linkage of ubiquitin moieties by the E2 ligase UBE2N and the E3 ligases RNF8 and RNF168, leading to the recruitment of repair proteins to sites of DNA damage. Monoubiquitination and ionizing radiation-induced 'Lys-63'-linked ubiquitination are distinct events.
Cellular localizationNucleus. Chromosome.
- Information by UniProt
- AW228881 antibody
- H2A histone family member X antibody
- H2A.FX antibody
All lanes : Anti-Histone H2A.X antibody (ab188819) at 1/500 dilution
Lane 1 : HepG2 cell lysate
Lane 2 : 293 cell lysate
Predicted band size: 15 kDa
Immunohistochemical analysis of formalin-fixed, paraffin-embedded Human colon tissue, labeling H2A.X using ab188819 at 10 µg/ml.
Immunohistochemical analysis of formalin-fixed, paraffin-embedded Human testis tissue, labeling H2A.X using ab188819 at 10 µg/ml.
Immunofluorescence analysis methanol-fixed HeLa cells, labeling H2A.X using ab188819.
ab188819 has not yet been referenced specifically in any publications.