Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 (mouse monoclonal)

Species Reactivity	Key Applications	Host	Format	Antibody Type
H, M	WB, ICC, DB	M	Purified	Monoclonal Antibody

Species Reactivity

Key Applications

Host

Format

Antibody Type

H, M

WB, ICC, DB

Purified

Monoclonal Antibody

Description
Catalogue Number	05-1951
Description	Anti-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 Information	Histone 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.

Description

Catalogue Number

05-1951

Description

Anti-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 Information

Histone 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.

Product Information
Format	Purified
Control	HeLa acid extract
Presentation	Purified mouse monoclonal IgG2bκ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Product Information

Format

Purified

Control

HeLa acid extract

Presentation

Purified mouse monoclonal IgG2bκ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Applications
Application	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.
Key Applications	Western Blotting Immunocytochemistry Dot Blot
Application Notes	Western 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.

Applications

Application

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.

Key Applications

Western Blotting
Immunocytochemistry
Dot Blot

Application Notes

Western 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
Immunogen	Linear peptide corresponding to human Histone H3 trimethylated at Lys27.
Epitope	Trimethylated Lys27
Clone	18E9.1
Host	Mouse
Specificity	This antibody recognizes Histone H3 trimethylated at Lys27.
Isotype	IgG2bκ
Species Reactivity	Human Mouse
Antibody Type	Monoclonal Antibody
Entrez Gene Number	NP_002098
Entrez Gene Summary	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].
Gene Symbol	HIST3H3 H3FT H3/t H3t H3/g H3.4 H3T
Modifications	Methylation
Purification Method	Protein G Purified
UniProt Number	P84243
UniProt Summary	FUNCTION: 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

Biological Information

Immunogen

Linear peptide corresponding to human Histone H3 trimethylated at Lys27.

Epitope

Trimethylated Lys27

Clone

18E9.1

Host

Mouse

Specificity

This antibody recognizes Histone H3 trimethylated at Lys27.

Isotype

IgG2bκ

Species Reactivity

Human
Mouse

Antibody Type

Monoclonal Antibody

Entrez Gene Number

NP_002098

Entrez Gene Summary

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].

Gene Symbol

HIST3H3
H3FT
H3/t
H3t
H3/g
H3.4
H3T

Modifications

Methylation

Purification Method

Protein G Purified

UniProt Number

P84243

UniProt Summary

FUNCTION: 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

Product Usage Statements
Quality Assurance	Evaluated 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.

Product Usage Statements

Quality Assurance

Evaluated 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 Conditions	Stable for 1 year at 2-8°C from date of receipt.

Storage and Shipping Information

Storage Conditions

Stable for 1 year at 2-8°C from date of receipt.

Packaging Information
Material Size	100 µL

Packaging Information

Material Size

100 µL

实验耗材

分子生物学试剂

蛋白与免疫学

生化试剂

细胞及检测试剂

色谱及层析

仪器设备

实验服务

办公用品

Anti-trimethyl Histone H3 (Lys27), clone 18E9.1 (mouse monoclonal)

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