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Anti-HP1γ Antibody, clone 42s2

clone 42s2, Upstate®, from mouse

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HP1 gamma, HP1 gamma homolog, Heterochromatin protein 1 homolog gamma, Modifier 2 protein, chromobox homolog 3, chromobox homolog 3 (Drosophila HP1 gamma), chromobox homolog 3 (HP1 gamma homolog, Drosophila), heterochromatin protein HP1 gamma, heterochro

biological source


Quality Level

antibody form

purified antibody

antibody product type

primary antibodies


42s2, monoclonal

species reactivity

human, mouse




ChIP: suitable
immunohistochemistry: suitable
western blot: suitable



NCBI accession no.

UniProt accession no.

shipped in

dry ice

target post-translational modification


Gene Information

human ... CBX3(11335)

General description

Chromatin assembly factor-1 (CAF-1) is a multisubunit protein complex that comprises three polypeptide subunits known as p150, p60, and p48. CAF-1 is a nucleosome assembly factor that deposits newly synthesized and acetylated histones H3/H4 into nascent chromatin during DNA replication. The p150 subunit of CAF-1 also supports the maintenance of heterochromatin, which requires the synthesis of both new histones and heterochromatin proteins and their orderly assembly during DNA replication.
Heterochromatin is characterized as densely coiled chromatin that generally replicates late during S phase, has a low gene density, and contains large blocks of repetitive DNA that is relatively inaccessible to DNA-modifying reagents. In late S phase, p150 directly associates with heterochromatin associated proteins 1 (HP1α, HP1β and HP1γ). As cells prepare for mitosis, CAF-1 p150 and some HP1 progressively dissociate from heterochromatin, coinciding with the phosphorylation of histone H3. The HP1 proteins reassociate with chromatin at the end of mitosis, as histone H3 is dephosphorylated


Reactivity with other species has not been determined.
This antibody recognizes HP1γ protein, Mr ~25 kDa.


GST fusion protein corresponding to residues 17-173 of human HP1γ protein. Clone 42s2.


This antibody has been reported by an independent laboratory to detect HP1γ positive cells in breast tissue.

Immunoprecipitation/Chromatin Immunoprecipitation:
This antibody has been reported by an independent laboratory to immunoprecipitate HP1γ from nuclear extracts and formalin-cross-linked chromatin.
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Chromatin Biology
Use Anti-HP1γ Antibody, clone 42s2 (Mouse Monoclonal Antibody) validated in ChIP, IHC, WB to detect HP1γ also known as Heterochromatin protein 1 homolog gamma.


Routinely evaluated by western blot in acid-extracted HeLa cell lysates (Catalog #13-112).

Western Blot Analysis:
0.01-0.1 µg/mL of this lot detected HP1γ protein in acid-extracted HeLa cell lysates (Catalog # 13-112).

Target description

25 kDa

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG1 in buffer containing 0.014 M phosphate buffer, pH 7.6, 0.175M NaCl, 0.07% sodium azide, and 30% glycerol. Liquid at -20ºC.

Storage and Stability

Stable for 1 year at -20°C from date of receipt. For maximum recovery of product, centrifuge the vial prior to removing the cap.

Analysis Note

HeLa acid extracts, HEK 293 nuclear extracts.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.
Due to license agreement restrictions, this product cannot be purchased for resale.

Legal Information

UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class

10 - Combustible liquids



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