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Products:Epigenetics and Nuclear Signaling >> Histones >> H3 >> Acetylated
Overview
Product name
Anti-Histone H3 (acetyl K18) antibody - ChIP Grade
See all Histone H3 products (24) ...
Description
Rabbit polyclonal to Histone H3 (acetyl K18) - ChIP Grade
Specificity
Specificity for acetyl K18 has been validated by blocking peptide/antibody incubation followed by immunostaining western blots.
Tested applications
IHC-P, WB, CHIPseq, IHC-P, ICC/IF, ChIP/Chip, ChIPmore details
Cross reactivity
Reacts with
Mouse, Cow, Human, Saccharomyces cerevisiae, Arabidopsis thaliana, Fungi
Immunogen
Synthetic peptide derived from within residues 1 - 100 Histone H3, acetylated at K18.
(Peptide available as ab24003.)
Positive control
This antibody gave a positive signal in HeLa Histone Preparation Nuclear Lysate.
Properties
Form
Liquid
Storage instructions
Store at +4°C short term (1-2 weeks). Aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
Storage buffer
Preservative: 0.02% Sodium Azide
Constituents: 1% BSA, PBS, pH 7.4
Concentration
Concentration information loading...
Purity
Immunogen affinity purified
Clonality
Polyclonal
Isotype
IgG
Research areas
Epigenetics and Nuclear Signaling >> ChIP'ing antibodies >> ChIP'ing antibodies
Epigenetics and Nuclear Signaling >> Histones >> H3 >> Acetylated
Applications
Show applications key
Our Abpromise guarantee covers the use of ab1191 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
IHC-P: 1/200Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
WB: 1/1000Detects a band of approximately 17 kDa.Can be blocked with Histone H3 peptide - acetyl K18 (ab24003).
CHIPseq: Use at an assay dependent dilution.
IHC-P
IHC-P: 1/200IHC-P: 1/200
ICC/IF: Use a concentration of 1 µg/ml
ChIP/Chip: Use at an assay dependent dilution.
ChIP: Use 2µg for 106 cells.
Target
Function
Core component of nucleosome. 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.
Sequence similarities
Belongs to the histone H3 family.
Developmental stage
Expressed during S phase, then expression strongly decreases as cell division slows down during the process of differentiation.
Post-translational
modifications
Acetylation is generally linked to gene activation. Acetylation on Lys-10 (H3K9ac) impairs methylation at Arg-9 (H3R8me2s). 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 (H3R8me2s) 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.
Methylation at Lys-5 (H3K4me), Lys-37 (H3K36me) and Lys-80 (H3K79me) are linked to gene activation. 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) are linked to gene repression. 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.
Monoubiquitinated by RAG1 in lymphoid cells, monoubiquitination is required for V(D)J recombination (By similarity). Ubiquitinated by the CUL4-DDB-RBX1 complex in response to ultraviolet irradiation. This may weaken the interaction between histones and DNA and facilitate DNA accessibility to repair proteins.
Cellular localization
Nucleus. Chromosome.
Target information above from: UniProt accessionP68431
The UniProt Consortium
The Universal Protein Resource (UniProt) in 2010
Nucleic Acids Res. 38:D142-D148 (2010).
Alternative names
- H3FA antibody
- H 3 antibody
- H3 3 Like Sequence MH921 antibody
see all
Database links
- Entrez Gene: 8350 Human
- Entrez Gene: 8351 Human
- Entrez Gene: 8352 Human
- Entrez Gene: 8353 Human
- Entrez Gene: 8354 Human
- Entrez Gene: 8355 Human
- Entrez Gene: 8356 Human
- Entrez Gene: 8357 Human
see all
Anti-Histone H3 (acetyl K18) antibody - ChIP Grade images:
ChIP - Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191)
Chromatin was prepared from U2OS cells according to the Abcam X-ChIP protocol. Cells were fixed with formaldehyde for 10 min. The ChIP was performed with 25 µg of chromatin, 2 µg of ab1191 (blue), and 20 µl of protein A/G sepharose beads. No antibody was added to the beads control (yellow). The immunoprecipitated DNA was quantified by real time PCR (Taqman approach). Primers and probes are located in the first kb of the transcribed region.
Immunofluorescence - Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191)
L929, 3T3 and HeLa cells fixed with 2% paraformaldehyde in PBS were incubated for 5 min in 0.2% Triton X-100 in PBS before a blocking step in 5% BSA, 0.1% Tween 20 in PBS (blocking buffer). Ac K18-H3 (ab1191) antibody was added diluted at 1/500 in blocking buffer for a 45 min incubation at room temperature. For visualization, fluorescein isothiocyanate (FITC) anti rabbit secondary antibody was used diluted at 1/800. DAPI (Sigma) in 0.1% Tween 20 in PBS was used in the final washing steps to stain DNA. Vectashield (Vector Laboratories Inc.) was used as mounting medium.
The ac K18-H3 antibody revealed a granular staining throughout the nucleoplasm, excluding regions that show an intense DAPI staining (mostly pericentric heterochromatin in mice cells).
Danièle Roche, Geneviève Almouzni's lab, UMR218
Western blot
All lanes : Anti-Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191) at 1 µg/ml
Lane 1 : Histone prep
Lane 2 : Histone prep with Histone H3 peptide - acetyl K18 (ab24003) at 1 µg/ml
Lysates/proteins at 0.5 µg/ml per lane.
Secondary
Goat polyclonal Secondary Antibody to Rabbit IgG - H&L (HRP) (ab6721) at 1/5000 dilution
Predicted band size : 15.4 kDa
Observed band size : 17 kDa (why is the actual band size different from the predicted?)
Immunocytochemistry/ Immunofluorescence - Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191)
ICC/IF image of ab1191 stained HeLa cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab1191, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM. This antibody also gave a positive result in 100% methanol fixed (5 min) Hek293, HepG2 and MCF7 cells at 1µg/ml, and in 4% PFA fixed (10 min) HeLa, Hek293, HepG2 and MCF7 cells at 1µg/ml.
Western blot - Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191)
All lanes : Anti-Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191) at 1 µg/ml
Lane 1 : HeLa Histone Preparation Nuclear Lysate
Lane 2 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - unmodified R17 at 0.5 µg/ml
Lane 3 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K9 (ab16635) at 0.5 µg/ml
Lane 4 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K14 at 0.5 µg/ml
Lane 5 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K18 (ab24003) at 0.5 µg/ml
Lane 6 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K23 (ab48359) at 0.5 µg/ml
Lane 7 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K27 (ab24404) at 0.5 µg/ml
Lane 8 : HeLa Histone Preparation Nuclear Lysate with Histone H3 peptide - acetyl K36 at 0.5 µg/ml
Lane 9 : HeLa Histone Preparation Nuclear Lysate with Histone H4 peptide - acetyl K12 (ab15662) at 0.5 µg/ml
Lysates/proteins at 2.5 µg per lane.
Secondary
Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution
developed using the ECL technique
Performed under reducing conditions.
Predicted band size : 15.4 kDa
Observed band size : 17 kDa (why is the actual band size different from the predicted?)
Exposure time : 1 minute
References for Anti-Histone H3 (acetyl K18) antibody - ChIP Grade (ab1191)
This product has been referenced in:
- Mullighan CGet al. CREBBP mutations in relapsed acute lymphoblastic leukaemia. Nature 471:235-9 (2011). ICC/IF; Human.Read more (PubMed: 21390130) »
- Pasqualucci Let al. Inactivating mutations of acetyltransferase genes in B-cell lymphoma. Nature 471:189-95 (2011).Read more (PubMed: 21390126) »
See all 25 publications for this product
Publishing research using ab1191? Please let us know so that we can cite the reference in this datasheet
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"