Phospho-Histone H2A.X (Tyr143)抗体特异性结合抗原：抗体本身不能直接溶解或杀伤带有特异抗原的靶细胞，通常需要补体或吞噬细胞等共同发挥效应以**病原微生物或导致病理损伤。然而，抗体可通过与病毒或**的特异性结合，直接发挥中和病毒的作用。
产品编号xy- 5360R
英文名称Phospho-Histone H2A.X (Tyr143)
中文名称磷酸化组蛋白H2AX抗体
别 名Histone H2A.X (phospho T143); Histone H2A.X (phospho Thr143); p-Histone H2A.X (T143); p-Histone H2A.X (Thr143); H2A histone family member X; Histone H2A.x; H2afx; H2a.x; H2ax; Hist5-2ax; H2A.X; H2A/X; H2AX; H2AFX; H2AX_HUMAN.
说 明 书100ul
产品类型磷酸化抗体
研究领域肿瘤 **学 信号转导 转录调节因子
抗体来源Rabbit
克隆类型Polyclonal
Phospho-Histone H2A.X (Tyr143)抗体交叉反应 Human, Mouse, Rat, Dog, Pig, Cow, Horse, Rabbit,
产品应用ELISA=1:500-1000 IHC-P=1:400-800 IHC-F=1:400-800 Flow-Cyt=1ug/Test ICC=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复）
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.
分 子 量16kDa
细胞定位细胞核
性 状Lyophilized or Liquid
浓 度1mg/1ml
免 疫 原KLH conjugated Synthesised phosphopeptide derived from human Histone H2AX around the phosphorylation site of Tyr143:QE(p-Y)-NH2
亚 型IgG
纯化方法affinity purified by Protein A
储 存 液0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol.
Phospho-Histone H2A.X (Tyr143)抗体保存条件Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.
PubMedPubMed
产品介绍background:
Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes. The linker histone, H1, interacts with linker DNA between nucleosomes and functions in the compaction of chromatin into higher order structures. This gene encodes a member of the histone H2A family, and generates two transcripts through the use of the conserved stem-loop termination motif, and the polyA addition motif. [provided by RefSeq, Jul 2008].
Function:
Variant 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.
Subunit:
The nucleosome is a histone octamer containing two molecules each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of DNA. Interacts with numerous proteins required for DNA damage signaling and repair when phosphorylated on Ser-140. These include MDC1, TP53BP1, BRCA1 and the MRN complex, composed of MRE11A, RAD50, and NBN. Interaction with the MRN complex is mediated at least in part by NBN. Also interacts with DHX9/NDHII when phosphorylated on Ser-140 and MCPH1 when phosphorylated at Ser-140 or Tyr-143. Interacts with ARRB2; the interaction is detected in the nucleus upon OR1D2 stimulation.
Subcellular Location:
Nucleus. Chromosome.
Post-translational modifications:
Phosphorylated 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 (By similarity). 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. Ubiquitination at Lys-14 and Lys-16 (H2AK13Ub and H2AK15Ub, respectively) in response to DNA damage is initiated by RNF168 that mediates monoubiquitination at these 2 sites, and 'Lys-63'-linked ubiquitin are then conjugated to monoubiquitin; RNF8 is able to extend 'Lys-63'-linked ubiquitin chains in vitro. H2AK119Ub and ionizing radiation-induced 'Lys-63'-linked ubiquitination (H2AK13Ub and H2AK15Ub) are distinct events.
Acetylation at Lys-37 increases in S and G2 phases. This modification has been proposed to play a role in DNA double-strand break repair.
Similarity:
Belongs to the histone H2A family.
SWISS:
P16104
Gene ID:
3014
Phospho-Histone H2A.X (Tyr143)抗体（antibody,
Ab）是由效应B细胞（效应**B细胞）分泌，机体用于抵御外来物质，如病毒，**等抗原，结构呈“Y”字型的球状蛋白质，仅仅存在于脊椎动物的血液和B**细胞膜表面。凡是能够跟抗体结合的物质，均被称作抗原，因此对于抗抗体（能够结合抗体的抗体）来说，抗体本身也是一种抗原物质。
Phospho-Histone H2A.X (Tyr143)抗体普通抗体重链和轻链的结构
重链结构：普通的**球蛋白具有2条重链（H链），分子量约为50kD,有μ、δ、γ、ε和α五种重链亚型，对应的**球蛋白名称分别为IgM、IgG、IgA、IgD和IgE。
轻链结构： 普通**球蛋白具有2条轻链（L链），分子质量约25kDa，有κ链和λ链两种亚型，这两种轻链决定了Ig的亚型类别（IgG1，IgG2，IgG3，IgG4）。一个天然的Ig分子两条轻链总是相同的，但在同一个体内可存在分别带有κ或λ链的抗体分子。不同种属生物体内两型轻链的比例不同，正常人血清**球蛋白κ链：λ链约为2：1，而在小鼠的比例为20：1。
2.2抗体Fab段和Fc段
IgG经木瓜蛋白酶酶切后裂解为2个完全相同的Fab段和1个Fc段,每个Fab段都为单价,可与抗原结合但不会再发生凝集反应；经胃蛋白酶酶切后裂解为1个完整F(ab)2片段和碎片化的Fc片段,F(ab’)2片段为双价,可同时结合两个抗原表位。Fab段为抗原结合片段（fragment of antigen binding，Fab），相当于抗体分子的两个臂，由一个完整的轻链和重链的VH和CH1结构域组成。Fc段为可结晶段（fragment crystallizable，Fc）相当于Ig的CH2和CH3结构域，是Ig与效应分子或者细胞相互作用的部位。Fab段包含完整的可变区，以及恒定区的CH1区域。Fc段仅指Ig恒定区CH2和CH3的区域，相当于Y字结构下面那一部分。
合格 Tyrosine Hydroxylase Tyrosine Hydroxylase
合格 合格 PCNA 增殖细胞核抗原抗体
合格 Tyrosine Hydroxylase 酪氨酸羟化酶抗体
合格 合格 GPR106 G蛋白偶联受体106抗体
合格 EGF 表皮生长因子抗体
合格 ACTG1 肌动蛋白γ1抗体
合格 PRPF4 PRPF4蛋白抗体
合格 EGF 表皮生长因子抗体
合格 Angiotensin III 血管紧张素III抗体
合格 ADAM9 去整合素样金属蛋白酶9抗体
合格 EGF 表皮生长因子抗体
合格 RanBP3 RAN结合蛋白3抗体
合格 HDLBP 高密度脂蛋白结合蛋白抗体
合格 Collagen alpha-1(I) chain I型胶原蛋白
合格 MDH2 线粒体苹果酸脱氢酶2抗体
合格 SCN1A SCN1A抗体
合格 NIT2 NIT2蛋白抗体
合格 FAIM3 FAS凋亡抑制分子3抗体
合格 DLC1 肝癌缺失基因1抗体
合格 DLC2 肝癌缺失基因2抗体
合格 GSK3 alpha 糖原合酶激酶3α抗体
合格 BPNT1 二磷酸3核苷酸酶抗体
合格 phospho-Nrf2 (Ser40) 磷酸化核因子2相关因子2(Ser40)抗体
合格 SFRS9 丝氨酸/苏氨酸SFRS9抗体
合格 ZNF703 锌指蛋白703抗体
合格 FAM166A FAM166A蛋白抗体
合格 DNCLI1 胞质动力蛋白轻链中间体1抗体
合格 MVK 甲羟戊酸激酶抗体
合格 合格 PCDH7 原钙粘蛋白7抗体
合格 MVK 甲羟戊酸激酶抗体
合格 合格 NFKB p65 细胞核因子/k基因结合核因子抗体