Histone H3, Polyclonal Antibody

H3.3A; H3F3; H3.3B; Histone H3.3

For Research Use Only. Not for use in diagnostic procedures.

Polyclonal

Rabbit

Recognizes endogenous levels of Histone H3 protein.

The antibody was purified by immunogen affinity chromatography.

Liquid in 0.42% Potassium phosphate, 0.87% Sodium chloride, pH 7.3, 30% glycerol, and 0.01% sodium azide.

Shipped at 4 degree C. Upon delivery aliquot and store at -20 degree C for one year. Avoid freeze/thaw cycles.

Small volumes of anti-H3F3A antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Rabbit polyclonal antibody to Histone H3

Western Blot (WB),Immunohistochemistry (IHC), Immunofluorescence (IF), Immunocytochemistry (ICC)

WB (1/500 - 1/1000), IHC (1/100 - 1/200), IF (1/100 - 1/500), ICC (1/100 - 1/500)

Western blot analysis of Histone H3 expression in HeLa (A), A431 (B) whole cell lysates.

Immunohistochemical analysis of Histone H3 staining in human breast cancer formalin fixed paraffin embedded tissue section. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0). The section was then incubated with the antibody at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

Immunofluorescent analysis of Histone H3 staining in HeLa cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 5-10 minutes and blocked with 3% BSA-PBS for 30 minutes at room temperature. Cells were probed with the primary antibody in 3% BSA-PBS and incubated overnight at 4 °C in a humidified chamber. Cells were washed with PBST and incubated with a DyLight 594-conjugated secondary antibody (red) in PBS at room temperature in the dark.

15,328 Da

H3 histone, family 3A

histone H3.3

Histone H3.3

H3.3A; H3F3  [Similar Products]

H33_HUMAN

Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes. The linker histone, H1, interacts with linker DNA between nucleosomes and functions in the compaction of chromatin into higher order structures. This gene contains introns and its mRNA is polyadenylated, unlike most histone genes. The protein encoded is a replication-independent member of the histone H3 family. [provided by RefSeq, Jul 2008]

H3F3A: Variant histone H3 which replaces conventional H3 in a wide range of nucleosomes in active genes. Constitutes the predominant form of histone H3 in non-dividing cells and is incorporated into chromatin independently of DNA synthesis. Deposited at sites of nucleosomal displacement throughout transcribed genes, suggesting that it represents an epigenetic imprint of transcriptionally active chromatin. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. The nucleosome is a histone octamer containing two molecules each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of DNA. Interacts with HIRA, a chaperone required for its incorporation into nucleosomes. Belongs to the histone H3 family.

Protein type: DNA-binding

Chromosomal Location of Human Ortholog: 1q42.12

Cellular Component: nucleoplasm; nuclear chromosome; protein complex; extracellular region; nucleosome; nucleus

Molecular Function: protein binding; nucleosomal DNA binding; protein heterodimerization activity

Biological Process: chromatin silencing at rDNA; nucleosome assembly; DNA replication-independent nucleosome assembly; negative regulation of gene expression, epigenetic; gene expression; blood coagulation; positive regulation of cell growth; regulation of gene expression, epigenetic; DNA methylation on cytosine

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