- 询价
- Cell Signaling Technology
- 8135
- USA
- 2025年10月15日
- W
- Rabbit
- H,M,R,Mk,Dm
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- 详细信息
- 文献和实验
- 技术资料
- 抗体英文名：
Histone H2B (V119) Antibody
- 抗原：
synthetic peptide corresponding to residues surrounding Val119 of human histone H2B protein
- 应用范围：
W
- 宿主：
Rabbit
- 供应商：
CST
- 保质期：
详见说明书
- 库存：
大量
- 适应物种：
H,M,R,Mk,Dm
- 级别：
详见MSDS文件
- 是否单克隆：
2
- 保存条件：
-20°c
- 规格：
100 ul (10 western blots)/carrier free & custom formulation / quantity
| 规格： | 产品价格： | ￥请询价 | |
|---|---|---|---|
| 规格： | 100 ul (10 western blots) | 产品价格： | ￥请询价 |
| 规格： | carrier free & custom formulation / quantity | 产品价格： | ￥请询价 |
pathway more info application references datasheet PDF MSDS PDF protocols
Applications Key: W=Western Blotting
Reactivity Key: H=Human M=Mouse R=Rat Mk=Monkey Dm=D. melanogaster
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
| Applications | Reactivity | Sensitivity | MW (kDa) | Source |
|---|---|---|---|---|
| W | H M R Mk (Dm) | Endogenous | 14 | Rabbit |
| Protocols |
|
|---|---|
| Specificity / Sensitivity | Histone H2B (V119) Antibody recognizes endogenous levels of total histone H2B protein. This antibody does not cross-react with other histone proteins. |
| Source / Purification | Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Val119 of human histone H2B protein. Antibodies are purified by protein A and peptide affinity chromatography. Western Blotting
Western blot analysis of extracts from various cell lines using Histone H2B (V119) Antibody. |
| Background | The nucleosome, made up of four core histone proteins (H2A, H2B, H3, and H4), is the primary building block of chromatin. Originally thought to function as a static scaffold for DNA packaging, histones have now been shown to be dynamic proteins, undergoing multiple types of post-translational modifications, including acetylation, phosphorylation, methylation, and ubiquitination (1,2). The p300/CBP histone acetyltransferases acetylate multiple lysine residues in the amino terminal tail of histone H2B (Lys5, 12, 15, and 20) at gene promoters during transcriptional activation (1-3). Hyper-acetylation of the histone tails neutralizes the positive charge of these domains and is believed to weaken histone-DNA and nucleosome-nucleosome interactions, thereby destabilizing chromatin structure and increasing the access of DNA to various DNA-binding proteins (4,5). In addition, acetylation of specific lysine residues creates docking sites that facilitate recruitment of many transcription and chromatin regulatory proteins that contain a bromodomain, which binds to acetylated lysine residues (6). Histone H2B is mono-ubiquitinated at Lys120 during transcriptional activation by the RAD6 E2 protein in conjunction with the BRE1A/BRE1B E3 ligase (also known as RNF20/RNF40) (7). Mono-ubiquitinated histone H2B Lys120 is associated with the transcribed region of active genes and stimulates transcriptional elongation by facilitating FACT-dependent chromatin remodeling (7-9). In addition, it is essential for subsequent methylation of histone H3 Lys4 and Lys79, two additional histone modifications that regulate transcriptional initiation and elongation (10). In response to metabolic stress, AMPK is recruited to responsive genes and phosphorylates histone H2B at Lys36, both at promoters and in transcribed regions of genes, and may regulate transcriptional elongation (11). In response to multiple apoptotic stimuli, histone H2B is phosphorylated at Ser14 by the Mst1 kinase (12). Upon induction of apoptosis, Mst1 is cleaved and activated by caspase-3, leading to global phosphorylation of histone H2B during chromatin condensation. Interestingly, histone H2B is rapidly phosphorylated at irradiation-induced DNA damage foci in mouse embryonic fibroblasts (13). In this case, phosphorylation at Ser14 is rapid, depends on prior phosphorylation of H2AX Ser139, and occurs in the absence of apoptosis, suggesting that Ser14 phosphorylation may have distinct roles in DNA-damage repair and apoptosis.
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| Application References | Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know ! |
| Companion Products |
For Research Use Only. Not For Use In Diagnostic Procedures. |
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文献和实验Histone Acetylation and Deacetylation
transcription (1 ,2 ). DNA is packaged into chromatin, a highly organized and dynamic protein-DNA complex. The fundamental subunit of chromatin, the nucleosome, is composed of an octomer of four core histones, an H3/H4 tetramer and two H2A/H2B dimers, surrounded
组蛋白是和染色体相联的最主要的蛋白质。它的作用是和染色体中的 DNA 的负电荷结合。组蛋白是比较小的碱性蛋白；在细胞正常 pH 值时，组蛋白带有正电荷，这样它们就可以和 DNA 结合，这个正电荷主要存在于碱性氨基酸 Lys 和 Arg 的 -NH3 上。其实，组蛋白约含 25% 的 Arg 和 Lys 。比其他蛋白的 Arg ， Lys 的含量都多。和真核 DNA 结合的有 5 种类型的组蛋白： H1 ， H2A ， H2B ， H3
实验步骤 1. Harvest cells and wash twice with ice-cold PBS. PBS and subsequent buffers can be supplemented with 5 mM sodium butyrate to retain levels of histone acetylation. 2. Resuspend cells in Triton Extraction Buffer
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