Anti-Histone H2A.X Antibody (pSer139)

Anti-Histone H2A.X Antibody (pSer139)__Rabbit Anti-Human Histone H2A.X (pSer139) Polyclonal Sapitinib

Product Name	Histone H2A.X Antibody (pSer139)
Description	Rabbit Anti-Human Histone H2A.X (pSer139) Polyclonal
Species Reactivity	Human, Mouse, Rat
Applications	, WB , ICC/IF
Antibody Dilution	WB (1:1000); optimal dilutions for assays should be determined by the user.
Host Species	Rabbit
Immunogen Species	Human
Immunogen	Synthesized phosphopeptide derived from human Histone H2A.X around the phosphorylation site of serine 139 (Q-A-SP-Q-E).
Conjugates	Alkaline Phosphatase, APC, ATTO 390, ATTO 488, ATTO 565, ATTO 594, ATTO 633, ATTO 655, ATTO 680, ATTO 700, Biotin, FITC, HRP, PE/ATTO 594, PerCP, RPE, Streptavidin, Unconjugated APC (Allophycocyanin) Overview: High quantum yield Large phycobiliprotein 6 chromophores per molecule Isolated from red algae Molecular Weight: 105 kDa APC Datasheet   Optical Properties: λex = 650 nm λem = 660 nm εmax = 7.0×105 Φf = 0.68 Brightness = 476 Laser = 594 or 633 nm Filter set = Cy®5     ATTO 390 Overview: High fluorescence yield Large Stokes-shift (89 nm) Good photostability Moderately hydrophilic Good solubility in polar solvents Coumarin derivate, uncharged Low molar mass: 343.42 g/mol  ATTO 390 Datasheet Optical Properties: λex = 390 nm λem = 479 nm εmax = 2.4×104 Φf = 0.90 τfl = 5.0 ns Brightness = 21.6 Laser = 365 or 405 nm     ATTO 488 Overview: High fluorescence yield High photostability Very hydrophilic Excellent solubility in water Very little aggregation New dye with net charge of -1 Molar Mass: 804 g/mol  ATTO 488 Datasheet    Optical Properties: λex = 501 nm λem = 523 nm εmax = 9.0×104 Φf = 0.80 τfl = 4.1 ns Brightness = 72 Laser = 488 nm Filter set = FITC    ATTO 565 Overview: High fluorescence yield High thermal and photostability Good solubility in polar solvents Excellent solubility in water Very little aggregation Rhodamine dye derivative Molar Mass: 611 g/mol ATTO 565 Datasheet   Optical Properties: λex = 563 nm λem = 592 nm εmax = 1.2×105 Φf = 0.9 τfl = 3.4 n Brightness = 10 Laser = 532 nm Filter set = TRITC    ATTO 594 Overview: High fluorescence yield High photostability Very hydrophilic Excellent solubility in water Very little aggregation New dye with net charge of -1 Molar Mass: 1137 g/mol ATTO 594 Datasheet   Optical Properties: λex = 601 nm λem = 627 nm εmax = 1.2×105 Φf = 0.85 τfl = 3.5 ns Brightness = 102 Laser = 594 nm Filter set = Texas Red®    ATTO 633 Overview: High fluorescence yield High thermal and photostability Moderately hydrophilic Good solubility in polar solvents Stable at pH 4 – 11 Cationic dye, perchlorate salt Molar Mass: 652.2 g/mol ATTO 633 Datasheet Optical Properties: λex = 629 nm λem = 657 nm εmax = 1.3×105 Φf = 0.64 τfl = 3.2 ns Brightness = 83.2 Laser = 633 nm Filter set = Cy®5    ATTO 655 Overview: High fluorescence yield High thermal and photostability Excellent ozone resistance Quenched by electron donors Very hydrophilic Good solubility in polar solvents Zwitterionic dye Molar Mass: 634 g/mol ATTO 655 Datasheet Optical Properties: λex = 663 nm λem = 684 nm εmax = 1.25×105 Φf = 0.30 τfl = 1.8 ns Brightness = 37.5 Laser = 633 – 647 nm Filter set = Cy®5    ATTO 680 Overview: High fluorescence yield Excellent thermal and photostability Quenched by electron donors Very hydrophilic Good solubility in polar solvents Zwitterionic dye Molar Mass: 631 g/mol ATTO 680 Datasheet   Optical Properties: λex = 680 nm λem = 700 nm εmax = 1.25×105 Φf = 0.30 τfl = 1.7 ns Brightness = 37.5 Laser = 633 – 676 nm Filter set = Cy®5.5    ATTO 700 Overview: High fluorescence yield Excellent thermal and photostability Quenched by electron donors Very hydrophilic Good solubility in polar solvents Zwitterionic dye Molar Mass: 575 g/mol ATTO 700 Datasheet   Optical Properties: λex = 700 nm λem = 719 nm εmax = 1.25×105 Φf = 0.25 τfl = 1.6 ns Brightness = 31.3 Laser = 676 nm Filter set = Cy®5.5     FITC (Fluorescein) Overview: Excellent fluorescence quantum yield High rate of photobleaching Good solubility in water Broad emission spectrum pH dependent spectra Molecular formula: C20H12O5 Molar mass: 332.3 g/mol FITC-Fluorescent-conjugate Optical Properties: λex = 494 nm λem = 520 nm εmax = 7.3×104 Φf = 0.92 τfl = 5.0 ns Brightness = 67.2 Laser = 488 nm Filter set = FITC    PE/ATTO 594 PE/ATTO 594 is a tandem conjugate, where PE is excited at 535 nm and transfers energy to ATTO 594 via FRET (fluorescence resonance energy transfer), which emits at 627 nm. Overview: High fluorescence yield High photostability Very hydrophilic Excellent solubility in water Very little aggregation PE/ATTO 594 Datasheet Optical Properties: λex = 535 nm λem = 627 nm Laser = 488 to 561 nm    PerCP  Overview: Peridinin-Chlorophyll-Protein Complex Small phycobiliprotein Isolated from red algae Large stokes shift (195 nm) Molecular Weight: 35 kDa PerCP Datasheet   Optical Properties: λex = 482 nm λem = 677 nm εmax = 1.96 x 106 Laser = 488 nm     R-PE (R-Phycoerythrin) Overview: Broad excitation spectrum High quantum yield Photostable Member of the phycobiliprotein family Isolated from red algae Excellent solubility in water Molecular Weight: 250 kDa R-PE Datasheet   Optical Properties: λex = 565 nm λem = 575 nm εmax = 2.0×106 Φf = 0.84 Brightness = 1.68 x 103 Laser = 488 to 561 nm Filter set = TRITC   AP (Alkaline Phosphatase) Properties: Broad enzymatic activity for phosphate esters of alcohols, amines, pyrophosphate, and phenols Commonly used to dephosphorylate the 5’-termini of DNA and RNA to prevent self-ligation Catalyzes the conversion of: Chromogenic substrates (e.g. pNPP, naphthol AS-TR phosphate, BCIP) into coloured products Fluorogenic substrates (e.g. 4-methylumbelliferyl phosphate) into fluorescent products Molecular weight: 140 kDa Applications: Western blot, immunohistochemistry, and ELISA AP Datasheet HRP (Horseradish peroxidase) Properties: Enzymatic activity is used to amplify weak signals and increase visibility of a target Readily combines with hydrogen peroxide (H2O2) to form HRP-H2O2 complex which can oxidize various hydrogen donors Catalyzes the conversion of: Chromogenic substrates (e.g. TMB, DAB, ABTS) into coloured products Chemiluminescent substrates (e.g. luminol and isoluminol) into light emitting products via enhanced chemiluminescence (ECL) Fluorogenic substrates (e.g. tyramine, homovanillic acid, and 4-hydroxyphenyl acetic acid) into fluorescent products High turnover rate enables rapid generation of a strong signal 44 kDa glycoprotein Extinction coefficient: 100 (403 nm) Applications: Western blot, immunohistochemistry, and ELISA HRP Datasheet Biotin Properties: Binds tetrameric avidin proteins including Streptavidin and neuravidin with very high affinity Molar mass: 244.31 g/mol Formula: C10H16N2O3S Applications: Western blot, immunohistochemistry, and ELISA Biotin Datasheet Streptavidin Properties: Homo-tetrameric protein purified from Streptomyces avidinii which binds four biotin molecules with extremely high affinity Molecular weight: 53 kDa Formula: C10H16N2O3S Applications: Western blot, immunohistochemistry, and ELISA Streptavidin Datasheet

Storage Buffer	PBS (without Mg2+ and Ca2+), pH 7.4, 50% glycerol, 150mM NaCl, 0.02% sodium azide
Storage Temperature	-20ºC
Shipping Temperature	Blue Ice or 4ºC
Purification	Affinity Purified
Clonality	Polyclonal
Isotype	IgG
Specificity	Detects endogenous levels of Histone H2A.X only when phosphorylated at serine 139.
Cite This Product	Rabbit Anti-Human Histone H2A.X (pSer139) Polyclonal (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SPC-1251)
Certificate of Analysis	A 1:1000 dilution of SPC-1251 was sufficient for detection of Histone H2A.X in 10 µg of 293T cell lysates by ECL immunoblot analysis using Goat Anti-Rabbit IgG:HRP as the secondary antibody.

References PubMed ID：:http://www.ncbi.nlm.nih.gov/pubmed/19128510

Alternative Names	H2A histone family member X Antibody, H2A.FX Antibody, H2A.X Antibody, H2AFX Antibody, H2AX histone Antibody, Histone 2A Antibody, Histone 2AX Antibody
Research Areas	Cell Signaling, DNA Damage and Repair, DNA Damage Recognition, DNA/RNA, Epigenetics and Nuclear Signalling, Histones
Cellular Localization	Chromosome, Nucleus
Accession Number	NP_002096.1
Gene ID	3014
Swiss Prot	P16104
Scientific Background	H2AX (H2A histone family, member X) is one of several genes coding for histone H2A. H2AX becomes phosphorylated on serine 139 as a reaction on DNA Double-strand breaks (DSB). The kinases of the PI3-family (Ataxia telangiectasia mutated, ATR and DNA-PKcs) are responsible for this phosphorylation, especially ATM. The role of the phosphorylated form potentially allows for space for the recruitment of proteins necessary during repair of DSBs. In addition to its role in DNA-damage repair, H2A.X is required for DNA fragmentation during apoptosis and is phosphorylated by various kinases in response to apoptotic signals. H2A.X is phosphorylated at Ser139 by DNA-PK in response to cell death receptor activation, c-Jun N-terminal Kinase (JNK1) in response to UV-A irradiation, and p38 MAPK in response to serum starvation.
References	1. Kuo L.J., and Yang L.X. (2008) In Vivo. 22(3): 305-309. 2. Mukherjee B., et al. (2006) DNA Repair (Amst). 5: 575-90. 3. Solier S., et al. (2009) Mol Cell Biol. 29: 68-82. 4. Lu C., et al. (2006) Mol Cell. 23: 121-32. 5. Lu C., et al. (2008) FEBS Lett. 582: 2703-8.