Cell Signaling Technology

Product Pathways - Chromatin Regulation / Epigenetics

Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb #13969

No. Size Price
13969S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
13969T 20 µl ( 2 western blots ) ¥1,500.00 现货查询 购买询价
13969 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat,Monkey, Endogenous 17 Rabbit IgG
IP 1:50
F 1:50
IF-IC 1:800
ChIP 1:50

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation, F=Flow Cytometry, IF-IC=Immunofluorescence (Immunocytochemistry), ChIP=Chromatin IP,

Homology

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

Specificity / Sensitivity

Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb detects endogenous levels of histone H3 when tri-methylated on Lys9. This antibody shows some cross-reactivity with histone H3 that is di-methylated on Lys9, but does not cross-react with non-methylated or mono-methylated histone H3 Lys9. This antibody does not detect tri-methyl histone H3 Lys9 when the adjacent Ser10 residue is phosphorylated during mitosis. In addition, this antibody does not cross-react with methylated histone H3 Lys4, Lys27, Lys36, or Lys79.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of histone H3 in which Lys9 is tri-methylated.

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 H3 (Lys9) (D4W1U) 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 GAPDH Exon 1 Primers #5516, SimpleChIP® Human AFM Intron 1 Primers #5098, SimpleChIP® Human MYT-1 Exon 1 Primers #4493, and SimpleChIP® Human α Satellite Repeat Primers #4486. 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.

IF-IC

IF-IC

Confocal immunofluorescent analysis of interphase (left) or mitotic (right) HeLa cells, untreated (upper) or λ phosphatase-treated (lower), using Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb (green) and β-Actin (8H10D10) Mouse mAb #3700 (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye). As shown, this antibody does not detect tri-methyl histone H3 Lys9 in mitotic cells when the adjacent Ser10 residue is phosphorylated.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb.

Western Blotting

Western Blotting

Antibody specificity was determined by western blotting. HeLa and NIH/3T3 cell lysates were probed with Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb (Panel A) or Tri-Methyl-Histone H3 (Lys9) (D4W1U) Rabbit mAb pre-adsorbed with 1.5 μM of various competitor peptides (panels B-M). As shown, only the tri-methyl histone H3 (Lys9) peptide (panel E) competed away binding of the 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). 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).

  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.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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

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

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

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