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05-1951 Anti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1

Anti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1 is a mouse monoclonal antibody for detection of trimethyl Histone H3 (Lys27) also known as H3K27me3, Histone H3 (tri methyl K27) & has been validated in WB, ICC.

MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.
Research Category: Epigenetics & Nuclear Function Research Sub-Category: Histones Gene Symbol: HIST3H3, H3FT, H3/t, H3t, H3/g, H3.4, H3T UniProt Number: P84243
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05-1951
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Key Specifications Table

Species ReactivityKey ApplicationsHostFormatAntibody Type
H, MWB, ICC, DBMPurifiedMonoclonal Antibody
Description
Catalogue Number05-1951
DescriptionAnti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1
Alternate Names
  • H3K27me3
  • Histone H3 (tri methyl K27)
  • H3 histone family, member T
  • histone 3, H3
  • histone cluster 3, H3
Background InformationHistone H3 is one of the five main histone proteins involved in the structure of chromatin in eukaryotic cells. Featuring a main globular domain and a long N-terminal tail, H3 is involved with the structure of the nucleosomes of the 'beads on a string' structure. The N-terminal tail of histone H3 protrudes from the globular nucleosome core and can undergo several different types of epigenetic modifications that influence cellular processes. These modifications include the covalent attachment of methyl or acetyl groups to lysine and arginine amino acids and the phosphorylation of serine or threonine.
References
Product Information
FormatPurified
Control
  • HeLa acid extract
PresentationPurified mouse monoclonal IgG2bκ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
Quality LevelMQ100
Applications
ApplicationAnti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1 is a mouse monoclonal antibody for detection of trimethyl Histone H3 (Lys27) also known as H3K27me3, Histone H3 (tri methyl K27) & has been validated in WB, ICC.
Key Applications
  • Western Blotting
  • Immunocytochemistry
  • Dot Blot
Application NotesWestern Blot Analysis: A 1:25,000 dilution from a representative lot detected Histone H3 in 10 µg of modified and nonmodified peptides.

Western Blot (Snap i.d.) Analysis: A 1:25,000 dilution from a representative lot detected Histone H3 in 10 µg of HeLa acid extract.

Immunocytochemistry Analysis: A 1:125 dilution from a representative lot detected Histone H3 in A431 and NIH/3T3 cells.

Dot Blot Analysis: Histone peptides with various modifications (see table) were transferred to
PVDF membrane and probed with Anti-Trimethyl Histone H3 (Lys4) (1:100 dilution). Proteins were visualized using a Donkey Anti-rabbit IgG conjugated to HRP and a chemiluminescence detection systems.
Biological Information
ImmunogenLinear peptide corresponding to human Histone H3 trimethylated at Lys27.
EpitopeTrimethylated Lys27
Clone18E9.1
HostMouse
SpecificityThis antibody recognizes Histone H3 trimethylated at Lys27.
IsotypeIgG2bκ
Species Reactivity
  • Human
  • Mouse
Antibody TypeMonoclonal Antibody
Entrez Gene Number
Entrez Gene SummaryHistones 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].
Gene Symbol
  • HIST3H3
  • H3FT
  • H3/t
  • H3t
  • H3/g
  • H3.4
  • H3T
Modifications
  • Methylation
Purification MethodProtein G Purified
UniProt Number
UniProt SummaryFUNCTION: 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.

SUBUNIT STRUCTURE: 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.

SUBCELLULAR LOCATION: Nucleus.

DEVELOPMENTAL STAGE: Expressed throughout the cell cycle independently of DNA synthesis.

PTM: Acetylation is generally linked to gene activation. Acetylation on Lys-10 (H3K9ac) impairs methylation at Arg-9 (H3R8sme2). Acetylation on Lys-19 (H3K18ac) and Lys-24 (H3K24ac) favors methylation at Arg-18 (H3R17me).

Citrullination at Arg-9 (H3R8ci) and/or Arg-18 (H3R17ci) by PADI4 impairs methylation and represses transcription.

Asymmetric dimethylation at Arg-18 (H3R17me2a) by CARM1 is linked to gene activation. Symmetric dimethylation at Arg-9 (H3R8sme2) by PRMT5 is linked to gene repression. Asymmetric dimethylation at Arg-3 (H3R2me2a) by PRMT6 is linked to gene repression and is mutually exclusive with H3 Lys-5 methylation (H3K4me2 and H3K4me3). H3R2me2a is present at the 3' of genes regardless of their transcription state and is enriched on inactive promoters, while it is absent on active promoters.

Specifically enriched in modifications associated with active chromatin such as methylation at Lys-5 (H3K4me), Lys-37 and Lys-80. Methylation at Lys-5 (H3K4me) facilitates subsequent acetylation of H3 and H4. Methylation at Lys-80 (H3K79me) is associated with DNA double-strand break (DSB) responses and is a specific target for TP53BP1. Methylation at Lys-10 (H3K9me) and Lys-28 (H3K27me), which are linked to gene repression, are underrepresented. Methylation at Lys-10 (H3K9me) is a specific target for HP1 proteins (CBX1, CBX3 and CBX5) and prevents subsequent phosphorylation at Ser-11 (H3S10ph) and acetylation of H3 and H4. Methylation at Lys-5 (H3K4me) and Lys-80 (H3K79me) require preliminary monoubiquitination of H2B at 'Lys-120'. Methylation at Lys-10 (H3K9me) and Lys-28 (H3K27me) are enriched in inactive X chromosome chromatin.

Phosphorylated at Thr-4 (H3T3ph) by GSG2/haspin during prophase and dephosphorylated during anaphase. Phosphorylation at Ser-11 (H3S10ph) by AURKB is crucial for chromosome condensation and cell-cycle progression during mitosis and meiosis. In addition phosphorylation at Ser-11 (H3S10ph) by RPS6KA4 and RPS6KA5 is important during interphase because it enables the transcription of genes following external stimulation, like mitogens, stress, growth factors or UV irradiation and result in the activation of genes, such as c-fos and c-jun. Phosphorylation at Ser-11 (H3S10ph), which is linked to gene activation, prevents methylation at Lys-10 (H3K9me) but facilitates acetylation of H3 and H4. Phosphorylation at Ser-11 (H3S10ph) by AURKB mediates the dissociation of HP1 proteins (CBX1, CBX3 and CBX5) from heterochromatin. Phosphorylation at Ser-11 (H3S10ph) is also an essential regulatory mechanism for neoplastic cell transformation. Phosphorylated at Ser-29 (H3S28ph) by MLTK isoform 1, RPS6KA5 or AURKB during mitosis or upon ultraviolet B irradiation. Phosphorylation at Thr-7 (H3T6ph) by PRKCBB is a specific tag for epigenetic transcriptional activation that prevents demethylation of Lys-5 (H3K4me) by LSD1/KDM1A. At centromeres, specifically phosphorylated at Thr-12 (H3T11ph) from prophase to early anaphase, by DAPK3 and PKN1. Phosphorylation at Thr-12 (H3T11ph) by PKN1 is a specific tag for epigenetic transcriptional activation that promotes demethylation of Lys-10 (H3K9me) by KDM4C/JMJD2C. Phosphorylation at Tyr-42 (H3Y41ph) by JAK2 promotes exclusion of CBX5 (HP1 alpha) from chromatin. Phosphorylation on Ser-32 (H3S31ph) is specific to regions bordering centromeres in metaphase chromosomes.

Ubiquitinated. Monoubiquitinated by RAG1 in lymphoid cells, monoubiquitination is required for V(D)J recombination (By similarity).

SEQUENCE SIMILARITIES: Belongs to the histone H3 family.

SEQUENCE CAUTION: The sequence CAH73371.1 differs from that shown. Reason: Erroneous gene model prediction.
Molecular Weight~17 kDa observed
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Quality AssuranceEvaluated by Western Blot in HeLa acid extract.

Western Blot Analysis: A 1:50,000 dilution of this antibody detected Histone H3 in 10 µg of HeLa acid extract.
Usage Statement
  • 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 and Shipping Information
Storage ConditionsStable for 1 year at 2-8°C from date of receipt.
Packaging Information
Material Size100 µL
Transport Information
Supplemental Information
Specifications
Global Trade Item Number
Catalog Number GTIN
05-1951 04053252641510

Documentation

Anti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1 SDS

Title

Safety Data Sheet (SDS) 

Anti-trimethyl Histone H3 (Lys27) Antibody, clone 18E9.1 Certificates of Analysis

TitleLot Number
Anti-trimethyl Histone H3 (Lys27), -2549481 2549481
Anti-trimethyl Histone H3 (Lys27), -2651874 2651874
Anti-trimethyl Histone H3 (Lys27), -2790950 2790950
Anti-trimethyl Histone H3 (Lys27), -2819201 2819201
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 2116006 2116006
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 2391202 2391202
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 1952467 1952467
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 2026418 2026418
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 2168285 2168285
Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 - 2205029 2205029
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