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Histone H3 dimethyl Lys4 antibody (pAb)
| Catalog No: 39141 | Format: 200 µl | $340 | Buy Now |
| Catalog No: 39142 | Format: 10 µl | $70 | Buy Now |
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Applications Table
| Western Blot | Chromatin IP | ChIP-Seq / ChIP-chip |
|---|---|---|
| 1:1,000 - 1:5,000 | 5 - 15 µl per ChIP | 3 µl per ChIP-Seq 3 µl per ChIP-chip |
for Histone H3 dimethyl Lys4 antibody (pAb)Background
Histone H3 is one of the core components of the nucleosome. The nucleosome is the smallest subunit of chromatin and consists of 147 base pairs of DNA wrapped around an octamer of core histone proteins (two each of Histone H2A, Histone H2B, Histone H3 and Histone H4). Histone H1 is a linker histone, present at the interface between the nucleosome core and DNA entry/exit points. Histone H1 is responsible for establishing higher-order chromatin structure.
Chromatin is subject to a variety of chemical modifications, including post-translational modifications of the histone proteins and the methylation of cytosine residues in the DNA. Reported histone modifications include acetylation, methylation, phosphorylation, ubiquitylation, glycosylation, ADP-ribosylation, carbonylation and SUMOylation; these modifications play a major role in regulating gene expression.
The methylation of histones can occur on two different residues: arginine or lysine. Histone methylation can be associated with transcriptional activation or repression, depending on the methylated residue. Lysine 4 of histone H3 can be mono-, di- or trimethylated by different histone methyltransferases (HMTs) such as SET1 or ASH1. Methylation of Lys4 is often associated with transcriptional activation. The demethylase LSD1 is able to demethylate histone H3 Lys4.
for Histone H3 dimethyl Lys4 antibody (pAb)Immunogen
This antibody was raised against a peptide including dimethyl-lysine 4 of histone H3.
for Histone H3 dimethyl Lys4 antibody (pAb)Application Notes
This Histone H3 dimethyl Lys4 antibody (H3K4me2) has been validated for use in chromatin IP (5 - 10 µl per ChIP), ChIP-Seq & ChIP-chip (3 µl each) and Western blotting (1:1,000 - 1:5,000). Specificity for dimethyl lysine 4 was confirmed by dot blot with non-modified histone H3 peptide or peptides mono-, di- or trimethylated at lysine 4; peptides mono-, di- or trimethylated at lysine 9; peptides mono-, di- or trimethylated at lysine 27. Also, Western blot against 200 ng of recombinant histone H3 was negative. This product is specific for histone H3 dimethylated at lysine 4.
Because this modification is conserved from yeast to human, a wide range of reactivity is expected.
for Histone H3 dimethyl Lys4 antibody (pAb)Buffer
Rabbit serum containing 30% glycerol and 0.035% sodium azide.
for Histone H3 dimethyl Lys4 antibody (pAb)Positive Control
Active Motif's HeLa acid extract (Catalog No. 36200) can be used as a positive control for Histone H3 dimethyl Lys4 antibody.
Chromatin IP Assays
Active Motif has a variety of Chromatin Immunoprecipitation Kits for every need.
Please visit our Chromatin IP Page to learn about ChIP products designed for use with Histone H3 dimethyl Lys4 antibody (pAb).
Histone H3 dimethyl Lys4 antibody tested by Western blot.
HeLa acid extract (10 µg) was probed with Histone H3 dimethyl Lys4 antibody (1:5,000 dilution).
Histone H3 dimethyl Lys4 antibody tested by ChIP-Seq.
ChIP was performed using chromatin from 500,000 primary mouse T cells. ChIP DNA was sequenced on the Illumina GAII and and 25 million sequence tags were mapped to identify H3K4me2 binding sites. The image shows the expected H3K4me2 binding pattern with enrichment at promoters and at locations outside of promoters.
Histone H3 dimethyl Lys4 pAb tested by dot blot analysis.
Dot blot analysis was used to confirm the specificity of Histone H3 dimethyl Lys4 pAb for dimethyl-lysine 4 of histone H3. Peptides corresponding to regions around major sites of histone H3 methylation (lysine 4, lysine 9, lysine 27) were spotted onto PVDF and probed with the antibody at a dilution of 1:5,000. The amount of peptide (in picomoles) spotted is indicated next to each row.
Lane 1: Unmodified Lys4 peptide. Lane 2: Monomethyl Lys4 peptide. Lane 3: Dimethyl Lys4 peptide. Lane 4: Trimethyl Lys4 peptide. Lane 5: Monomethyl Lys9 peptide. Lane 6: Unmodified Lys9 peptide. Lane 7: Dimethyl Lys9 peptide. Lane 8: Trimethyl Lys9 peptide. Lane 9: Unmodified Lys27 peptide. Lane 10: Monomethyl Lys27 peptide. Lane 11: Dimethyl Lys27 peptide. Lane 12: Trimethyl Lys27 peptide.
Histone H3 dimethyl Lys4 pAb tested by ChIP.
Chromatin IP performed using the ChIP-IT® Express Kit (Catalog No. 53008) and HeLa chromatin (1.5 x 10^6 cell equivalents per ChIP) using 15 µl of Histone H3 dimethyl Lys4 antibody or the equivalent amount of rabbit IgG as a negative control. Real time, quantitative PCR (RT-qPCR) was performed on DNA purified from each of the ChIP reactions using a primer pair specific for the PABPC1 gene. Data are presented as Fold Enrichment of the ChIP antibody signal compared to the negative control IgG (which has been normalized to 1.0) using the ddCT method.
Histone H3 dimethyl Lys4 antibody specificity tested by peptide array analysis.
Peptide array analysis was used to confirm the specificity of this antibody for its intended modification. Histone H3 dimethyl Lys4 antibody was applied at a dilution of 1:10,000 to Active Motif's MODified™ Histone Peptide Array (Catalog No. 13001). The arrays were scanned with ArrayAnalysis Software 7 and the results plotted. Specificity data is shown for the most reactive peptides and those related to the immunogen.
Array Data File
for Histone H3 dimethyl Lys4 antibody (pAb)Storage
Antibodies in solution can be stored at -20°C for 2 years. Avoid repeated freeze/thaw cycles and keep on ice when not in storage.
for Histone H3 dimethyl Lys4 antibody (pAb)Guarantee
This product is guaranteed for 6 months from date of receipt.
This product is for research use only and is not for use in diagnostic procedures.
Application Key
- ChIP = Chromatin Immunoprecipitation;
- DB = Dot Blot;
- ELISA = Enzyme-linked Immunosorbent Assay;
- EMSA = Electrophoretic Mobility Shift Assay
- FACS = Flow Cytometry;
- ICC = Immunocytochemistry;
- IF = Immunofluorescence;
- IHC = Immunohistochemistry;
- IP = Immunoprecipitation;
- MeDIP = Methyl-DNA Immunoprecipitation;
- WB = Western Blotting
