Histone H3.1 / 3.2 antibody (mAb)

RRID: AB_2793710
Clone: 1D4F2
Catalog No: 61629 Format: 100 µg $470 Buy
Catalog No: 61630 Format: 10 µg $115 Buy

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Antibody Type:
Protein A Chromatography
Molecular Weight:
17 kDa
Human, Wide Range Predicted


ChIP Validated ChIP-Seq Validated Western Blot Validated Immunofluorescence Validated Immunocytochemistry Validated

Application Notes

Applications Validated by Active Motif:
ICC/IF: 0.4 - 2 µg/ml dilution
WB*: 0.2 - 2 µg/ml dilution

*Note: many chromatin-bound proteins are not soluble in a low salt nuclear extract and fractionate to the pellet. Therefore, we recommend a High Salt / Sonication Protocol when preparing nuclear extracts for Western Blot.

Published Applications

The following applications have been published using this antibody. Unless noted above, Active Motif may not have validated the antibody for use in these applications:

ChIP, ChIP-Seq

View publications that use Active Motif products & services here. Enter the product number(s) to see publications & applications that use this antibody.


This antibody was raised against a peptide comprising amino acids 21-39 of human Histone H3.1. This region is 100% identical in human Histone H3.2.


Purified IgG in PBS with 30% glycerol and 0.035% sodium azide. Sodium azide is highly toxic.


Histone H3.1 / 3.2 antibody (mAb) (Clone 1D4F2) tested by immunofluorescence.
Top: HeLa cell stained with H3.1 / 3.2 antibody (mAb). Bottom: Hoechst.

Histone H3.1 / 3.2 antibody (mAb) (Clone 1D4F2) tested by Western blot.
HeLa nuclear extract (20 µg) and recombinant human Histones (100 ng) were probed with Histone H3.1 / 3.2 antibody (mAb) at a 1 µg/ml dilution in lanes 1, 2, & 3. Histone H3 (mAb) (Catalog No. 61475) is also shown at a 0.25 µg/ml dilution in lanes 4 & 5.
Lane 1: Nuclear extract of untreated HeLa cells.
Lane 2: 100 ng recombinant human Histone H3.1 protein.
Lane 3: 100 ng recombinant human Histone H3.3 protein.
Lane 4: 100 ng recombinant human Histone H3.1 protein.
Lane 5: 100 ng recombinant human Histone H3.3 protein.


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. There are three protein variants of Histone H3, Histone H3.1, 3.2 and 3.3. The incorporation of Histone H3.1 and H3.2 into nucleosomes is replication dependent, in contrast to Histone H3.3, which is independent of DNA synthesis and occurs throughout the cell cycle. Human Histone H3.1 and H3.2 are identical in amino acid sequences except at position 110 where H3.1 has a cysteine and H3.2 has a serine.

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 Histone H3.1 / 3.2 antibody (mAb).


Some products may be shipped at room temperature. This will not affect their stability or performance. Avoid repeated freeze/thaw cycles by aliquoting items into single-use fractions for storage at -20°C for up to 2 years. Keep all reagents on ice when not in storage.


This product is guaranteed for 12 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;
  • ChIP = ChIP Sequencing;
  • CUT&RUN = Cleavage Under Targets and Release Using Nuclease;
  • CUT&Tag = Cleavage Under Targets and Tagmentation;
  • 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;
  • NEU = Neutralizing;
  • WB = Western Blotting