DNMT3A Antibody


Western Blot: Dnmt3a Antibody [NB100-265] - Analysis using NB100-265 to detect overexpressed DNMT3A level in HCT-116 cells. Lane 1: 40 ug of nuclear extract from untreated HCT-116 cells. Lane 2: 40 ug of Nuclear extract ...read more
Immunocytochemistry/ Immunofluorescence: Dnmt3a Antibody [NB100-265] - Dnmt3a antibody was tested in Ntera-2 cells with Dylight 488 (green). Nuclei and beta-tubulin were counterstained with DAPI (blue) and Dylight 550 ...read more
Immunohistochemistry: Dnmt3a Antibody [NB100-265] - Dnmt3a antibody was tested in human testis using DAB with hematoxylin counterstain.

Product Details

Reactivity Hu, MuSpecies Glossary
Applications WB, ICC/IF, IHC, IHC-P, IP
This product is unpurified. The exact concentration of antibody is not quantifiable.

Order Details

DNMT3A Antibody Summary

Amino acids 10-118 of human Dnmt3a [UniProt# Q9Y6K1]
Nuclear, cytoplasmic.
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Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
0.1% Sodium Azide


  • Western Blot 1:1000
  • Immunocytochemistry/Immunofluorescence 1:500
  • Immunohistochemistry 1:200
  • Immunohistochemistry-Paraffin 1:200
  • Immunoprecipitation 1:10-1:500
Application Notes
This Dnmt3a antibody is useful for Immunohistochemistry on paraffin-embedded sections, Immunoprecipitation, Immunocytochemistry/Immunofluorescence and Western Blot, where a band should be seen at ~120 kDa. NOTE: This antibody does not neutralize the enzymatic activity of its corresponding methyltransferase. In ICC/IF, nuclear and cytoplasmic staining was observed in Ntera-2 cells. In IHC-P, staining was observed in the cytoplasm of mouse testis. Prior to immunostaining paraffin tissues, antigen retrieval with sodium citrate buffer (pH 6.0) is recommended. The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Theoretical MW
120 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Read Publications using
NB100-265 in the following applications:

  • WB
    3 publications

Alternate Names for DNMT3A Antibody

  • DNA (cytosine-5-)-methyltransferase 3 alpha
  • DNA (cytosine-5)-methyltransferase 3A
  • DNA cytosine methyltransferase 3A2
  • DNA methyltransferase HsaIIIA
  • DNA MTase HsaIIIA
  • Dnmt3a
  • DNMT3A2
  • EC
  • M.HsaIIIA


With a critical role in long-term transcriptional silencing, DNA methylation represents a key layer of epigenetic information which is essential for embryonic development, germline differentiation, functional maturation of neuronal tissues etc., and DNA-methyltransferases such as DNMT3A, DNMT3B and DNMT3L are unique enzymes with the ability to transfer methyl group derived from folate intermediates to nucleic acids. DNA (cytosine-5)-methyltransferase 3A or DNMT3A is required for genome-wide de novo methylation and for establishment of DNA methylation patterns during development. Localized in the nucleus and cytoplasm, it accumulates in major satellite repeats at pericentric heterochromatin and is activated through binding to its regulatory factor DNMT3L. DNA methylation is coordinated with methylation of histones and DNMT3A modifies DNA in a non-processive manner, and it also methylates non-CpG sites. DNMT3A preferentially methylate DNA linker between 2 nucleosomal cores and is inhibited by histone H1. It plays a role in paternal/maternal imprinting and is required for methylation of most imprinted loci in germ cells. DNMT3A acts as a transcriptional corepressor for ZNF238 and actively represses transcription through HDAC.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for DNMT3A Antibody (NB100-265)(10)

We have publications tested in 2 confirmed species: Human, Mouse.

We have publications tested in 1 application: WB.

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Showing Publications 1 - 10 of 10.
Publications using NB100-265 Applications Species
Selvakumar T, Gjidoda A, Hovde SL, Henry RW. Regulation of Human RNA Polymerase III Transcription by DNMT1 and DNMT3a DNA Methyltransferases J Biol Chem 2012 Mar 2 [PMID:22219193] (WB, Human) WB Human
Kaminskyy V, Surova O, Vaculova A, Zhivotovsky B. Combined inhibition of DNA methyltransferase and histone deacetylase restores caspase-8 expression and sensitizes SCLC cells to TRAIL. Carcinogenesis. 2011 Jul 18. [PMID:21771726]
Al-Salihi M, Yu M, Burnett DM et al. The depletion of DNA methyltransferase-1 and the epigenetic effects of 5-aza-2'deoxycytidine (decitabine) are differentially regulated by cell cycle progression. Epigenetics 2011 Aug [PMID:21725200] (Human) Human
Shikauchi Y et al. SALL3 interacts with DNMT3A and shows the ability to inhibit CpG island methylation in hepatocellular carcinoma. Mol Cell Biol;29(7):1944-58. 2009 Apr. [PMID:19139273]
Fanelli M, Caprodossi S, Ricci-Vitiani L et al. Loss of pericentromeric DNA methylation pattern in human glioblastoma is associated with altered DNA methyltransferases expression and involves the stem cell compartment. Oncogene 2008 Jan 10 [PMID:17653095] (Human) Human
Reynolds PA et al. Tumor suppressor p16INK4A regulates polycomb-mediated DNA hypermethylation in human mammary epithelial cells. J Biol Chem;281(34):24790-802. 2006 Aug 25. [PMID:16766534]
La Salle S, Trasler JM. Dynamic expression of DNMT3a and DNMT3b isoforms during male germ cell development in the mouse. Dev Biol 2006 Aug 1 [PMID:16725135] (Mouse) Mouse
Robert MF et al. DNMT1 is required to maintain CpG methylation and aberrant gene silencing in human cancer cells. Nat Genet;33(1):61-5. 2003 Jan. [PMID:12496760] (WB, Human) WB Human
Weisenberger, DJ et al. Identification and characterization of alternatively spliced variants of DNA methyltransferase 3a in mammalian cells. Gene;298(1):91-9. 2002 Sep 18. [PMID:12406579] (Human, Mouse) Human, Mouse
Beaulieu N et al. An essential role for DNA methyltransferase DNMT3B in cancer cell survival. J Biol Chem;277(31):28176-81. 2002 Aug 2. [PMID:12015329] (WB, Human) WB Human

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Product General Protocols

Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

Video Protocols

WB Video Protocol
ICC/IF Video Protocol

FAQs for DNMT3A Antibody (NB100-265). (Showing 1 - 2 of 2 FAQs).

  1. I'll try to experiment ChIP for using the following antibody. Dnmt3a Antibody (NB100-265) Please tell me a concentration it.
    • NB100-265 is provided in whole antisera and the concentration of antibody is not available.
  2. Does this antibody recognize the short (723 aa / 81 kD) or the long (912 aa/102 kD) form of the DNA methytransferase 3A?
    • The immunogen sequence used for Dnmt3a antibody (NB100-265) is from the amino acids 10-118 of human Dnmt3a which does not match the amino acid sequence of the short forms of this target (i.e. 723 AA Isoform-2 or 166 AA Isoform-3). Therefore this antibody should not be able to detect the short forms of Dnmt3a. In our testing on HCT-116 cells, we have observed the target bands at approximately 120 kDa, and no bands were observed at approximately 82kD or 17kD positions.

Positive Control Lysate(s)

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Blogs on DNMT3A.

The role of DNMT3A in development
Epigenetics is the study of heritable change in gene activity despite alteration of the hosts DNA sequence.  Change in gene activity done independently of the DNA sequence is achieved by way of histone and DNA methylation.  Gene silencing in DNA ...  Read full blog post.

Go Ahead! Make My DNA
DNA methylation plays a critical role the long-term silencing of transcription and is essential for processes such as embryonic development, germline differentiation, and tissue maturation. Dnmt3a is a member of the C5-methyltransferase family that re...  Read full blog post.

DNMT's: An Overview of 3 DNA Methyltransferases
DNA methyltransferases catalyze the transfer of the methyl group from S-andenosyl methionine (SAM) to DNA. Such methylation has wide ranging function in the cell, including organismal development and cell differentiation. In cancer, abnormal hypermeth...  Read full blog post.

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Gene Symbol DNMT3A

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