SUV39H1 antibody (mAb)

Clone: MG44
Aliases: MG44, KMT1A, SUV39H, H3-K9-HMTase 1
Catalog No: 39785 Format: 100 µg $435 Buy
Catalog No: 39786 Format: 10 µg $105 Buy

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Antibody Type:
Protein G Chromatography
Molecular Weight:
50 kDa
Human, Mouse


ChIP Validated Western Blot Validated Immunoprecipitation Validated Immunocytochemistry Validated

Application Notes

Published Applications:
See references for more information. Individual optimization may be required.


This SUV39H1 antibody was raised against a recombinant protein corresponding to amino acids 1-126 of mouse SUV39H1.


Purified IgG in 70 mM Tris (pH 8), 105 mM NaCl, 31 mM glycine, 0.07 mM EDTA, 30% glycerol and 0.035% sodium azide. Sodium azide is highly toxic.



SUV39H1 is one of two homologues of the Drosophila Suppressor-of-variegation 3(9) protein (aka Su(var)3-9). SUV39H1 is a SET domain-containing histone methyltransferase specific for lysine 9 of histone H3. Lysine 9 methylation of histone H3 is found at regions of the genome that are transcriptionally silenced, such as centromeres, repetitive elements and inactive genes. H3 lysine 9 methylation is a hallmark of heterochromatin, regions of the genome that are in a tightly compacted state and relatively devoid of gene expression. HP1 proteins recognize and bind lysine 9 methylation and this contributes to maintaining heterochromatin in its compact and inactive state. SUV39H1 also contains a chromodomain, which may bind to lysine 9 methylation and contribute to the regional spreading of lysine 9 methylation and the establishment of heterochromatin over broader domains of the genome.

Chromatin IP Assays

This antibody has been validated for use in ChIP and/or ChIP-Seq, and can be used with Active Motif's ChIP-IT® High Sensitivity Kit or our magnetic bead-based ChIP-IT® Express Kits. For an overview of all of our ChIP products, please visit our Chromatin IP Page to learn about ChIP products designed for use with SUV39H1 antibody (mAb).

Bridging Antibody to Improve ChIP, MeDIP and IP

Some isotypes of mouse IgG antibodies do not bind well to protein G-conjugated agarose/magnetic beads, which are commonly used in ChIP, MeDIP and IP experiments. Capture efficiency can be improved by including an anti-mouse IgG bridging antibody because it binds with a strong affinity to both the protein G beads and the mouse IgG antibody. By increasing the affinity of the mouse primary antibody for the protein G bead, the Bridging Antibody for Mouse IgG can help improve the results of all ChIP, MeDIP and IP experiments that use SUV39H1 antibody (mAb).


Some products may be shipped at room temperature. This will not affect their stability or performance. Upon receipt, unconjugated antibodies may be stored at -20°C for up to 2 years. Fluorophore- & enzyme-conjugated antibodies should be stored at 4°C. Fluorophore-conjugated antibodies should be protected from light. Keep reagents on ice when not in storage; to avoid repeated freeze/thaw cycles, we recommend aliquoting items that will be stored frozen into single-use fractions prior to freezing.


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
  • FC = Flow Cytometry;
  • ICC = Immunocytochemistry;
  • IF = Immunofluorescence;
  • IHC = Immunohistochemistry;
  • IP = Immunoprecipitation;
  • MeDIP = Methyl-DNA Immunoprecipitation;
  • TR-FRET = Time-Resolved Fluorescence Resonance Energy Transfer;
  • WB = Western Blotting