Cell Signaling Technology

Product Pathways - Chromatin Regulation / Epigenetics

Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb #5737

H4   H4K20   H4K20me3   histone   histone methylation   PR-Set7   Set8   Suv4-20  

No. Size Price
5737S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
5737 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat,Monkey, Endogenous 11 Rabbit IgG
ChIP 1:50

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, ChIP=Chromatin IP,

Homology

Species predicted to react based on 100% sequence homology: Xenopus, Bovine, Pig,

Specificity / Sensitivity

Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb recognizes endogenous levels of histone H4 protein only when tri-methylated at Lys20. This antibody does not cross-react with non-methylated, mono-methylated or di-methylated histone H4 Lys20. This antibody detects a 95 kDa non-specific protein of unkown origin.

Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb兔单抗能够检测仅在Lys20位点三甲基化的内源性histone H4蛋白水平。该抗体显示不能与Lys20位点未甲基化、单甲基化或双甲基化发生交叉反应。该抗体可检测未知来源的95 kDa大小非特异性蛋白。

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the amino terminus of histone H4 in which Lys20 is tri-methylated.

通过人工合成仅在lys20位点三甲基化histone H4蛋白氨基端相应的多肽片段去免疫动物从而制备出此单克隆抗体。

Chromatin IP

Chromatin IP

Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 106 HeLa cells and either 10 μl of Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb, or 2 μl of Normal Rabbit IgG #2729, using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using SimpleChIP® Human α Satellite Repeat Primers #4486, SimpleChIP® Human AFM Intron 1 Primers #5098, and SimpleChIP® Human GAPDH Exon 1 Primers #5516. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.

使用SimpleChIP®Enzymatic Chromatin IP Kit (Magnetic Beads) #9003,用4 x 106 HeLa细胞的交联染色质以及10 µl Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb或2 µl Normal Rabbit IgG #2729进行染色质免疫沉淀实验。使用SimpleChIP® Human α Satellite Repeat Primers #4486、SimpleChIP® Human AFM Intron 1 Primers #5098和SimpleChIP® Human GAPDH Exon 1 Primers #5516,浓缩的DNA通过real-time PCR定量。在每个样品中免疫沉淀DNA的数量被当做一个相对于总input chromatin的数量的信号,这相当于一。

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa and NIH/3T3 cells using Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb.

使用Tri-Methyl-Histone H4 (Lys20) (D84D2) Rabbit mAb兔单抗,免疫印迹(Western blot)分析HeLa和NIH/3T3细胞中Tri-Methyl-Histone H4 (Lys20)的蛋白水平。

ELISA-Peptide

ELISA-Peptide

Tri-Methyl Histone H4 (Lys20) (D84D2) Rabbit mAb specificity was determined by peptide ELISA. The graph depicts the binding of the antibody to pre-coated tri-methyl histone H4 (Lys20) peptide in the presence of increasing concentrations of various competitor peptides. As shown, only the tri-methyl histone H4 (Lys20) peptide competed away binding of the antibody.

通过peptide ELISA确定Tri-Methyl Histone H4 (Lys20) (D84D2) Rabbit mAb兔单抗的特异性。该图描述了抗体与提前包被的tri-methyl histone H4 (Lys20) peptide的结合能力,并且多肽中含有浓度递增的不同竞争多肽。如同所示,仅tri-methyl histone H4 (Lys20) peptide竞争脱离抗体的结合。

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). Histone methylation is a major determinant for the formation of active and inactive regions of the genome and is crucial for the proper programming of the genome during development (2,3). Arginine methylation of histones H3 (Arg2, 17, 26) and H4 (Arg3) promotes transcriptional activation and is mediated by a family of protein arginine methyltransferases (PRMTs), including the co-activators PRMT1 and CARM1 (PRMT4) (4). In contrast, a more diverse set of histone lysine methyltransferases has been identified, all but one of which contain a conserved catalytic SET domain originally identified in the Drosophila Su(var)3-9, Enhancer of zeste, and Trithorax proteins. Lysine methylation occurs primarily on histones H3 (Lys4, 9, 27, 36, 79) and H4 (Lys20) and has been implicated in both transcriptional activation and silencing (4). Methylation of these lysine residues coordinates the recruitment of chromatin modifying enzymes containing methyl-lysine binding modules such as chromodomains (HP1, PRC1), PHD fingers (BPTF, ING2), tudor domains (53BP1), and WD-40 domains (WDR5) (5-8). The discovery of histone demethylases such as PADI4, LSD1, JMJD1, JMJD2, and JHDM1 has shown that methylation is a reversible epigenetic marker (9).

核小体是由四种组蛋白(H2A、H2B、H3和H4)组成,它是染色质的主要构成模块。起初被认为作为一个DNA包装的静态支架,现在则显示组蛋白是动态蛋白,经历多种翻译后修饰的形式,包括乙酰化、磷酸化、甲基化和泛素化(1)。组蛋白甲基化对于该基因组的活化和未活化区域的形成有着主要决定作用,并且在发育期间对该基因组的正确规划起着关键作用(2,3)。histones H3 (Arg2、17、26)和H4 (Arg3)的精氨酸甲基化促进转录调控以及通过蛋白质精氨酸甲基转移酶(PRMTs)家族的介导,包括共激活因子PRMT1和CARM1 (PRMT4) (4)。相反,多种多样的组蛋白赖氨酸甲基转移酶已经被鉴定,除了这个之外其它的都包含一个保守的催化SET区域,这个起初被鉴定在Drosophila Su(var)3-9、zeste增强子和Trithorax蛋白。赖氨酸甲基化主要发生在histones H3 (Lys4、9、27、36、79)和H4 (Lys20),并且已经涉及到转录激活和沉默(4)。这些赖氨酸残基的甲基化协调染色质修饰酶的招募包括methyl-lysine结合模块例如chromodomains (HP1, PRC1)、PHD fingers (BPTF, ING2)、tudor domains (53BP1)和WD-40 domains (WDR5) (5-8)。组蛋白例如PADI4、LSD1、JMJD1、JMJD2和JHDM1的发现已经显示甲基化是一个可逆的后生标记物(9)。

  1. Peterson, C.L. and Laniel, M.A. (2004) Curr Biol 14, R546-51.
  2. Kubicek, S. et al. (2006) Ernst Schering Res Found Workshop , 1-27.
  3. Lin, W. and Dent, S.Y. (2006) Curr Opin Genet Dev 16, 137-42.
  4. Lee, D.Y. et al. (2005) Endocr Rev 26, 147-70.
  5. Daniel, J.A. et al. (2005) Cell Cycle 4, 919-26.
  6. Shi, X. et al. (2006) Nature 442, 96-9.
  7. Wysocka, J. et al. (2006) Nature 442, 86-90.
  8. Wysocka, J. et al. (2005) Cell 121, 859-72.
  9. Trojer, P. and Reinberg, D. (2006) Cell 125, 213-7.

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Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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