Product nameAnti-Histone H3 (asymmetric di methyl R17) antibody
See all Histone H3 primary antibodies
DescriptionRabbit polyclonal to Histone H3 (asymmetric di methyl R17)
SpecificityPeptide competition experiments confirmed that the antibody recognises specifically methylated R17 in H3 and not unmethylated H3 or methylated R3 in H4 (see figure 1). In whole cell extract the antibody recognises specifically only the methylated histone H3 protein band (see figure 2) Further, the antibody doesn't crossreact with the C-terminal methylation sites of CARM1 in histone H3. In IHC on paraffin-embedded sections of human tonsil, the antibody shows nuclear staining across most nuclei. Slight batch to batch variation is observed, but no more than 50% cross reactivity with symmetric di methyl R17 peptide is allowed.
Tested applicationsSuitable for: ChIP/Chip, PepArr, IHC-P, ICC/IF, ChIP, Dot blot, IP, WBmore details
Species reactivityReacts with: Mouse, Rat, Chicken, Cow, Human, Caenorhabditis elegans, Drosophila melanogaster, Toxoplasma gondii
Predicted to work with: Mammals
Synthetic peptide within Human Histone H3 aa 1-100 (asymmetric di methyl R17) conjugated to Keyhole Limpet Haemocyanin (KLH). The exact sequence is proprietary.
(Peptide available as
- This antibody gave a positive signal in HeLa Histone Preparation Nuclear whole cell lysate. It also gave a positive result in MCF7 cell line.
The nuclear hormone receptor co-activator CARM1 has the potential to methylate histone H3 at arginine residues in vitro. The methyltransferase activity of CARM1 is necessary for its co-activator functions in transient transfection assays. However, the role of this methyltransferase in vivo is unclear, given that methylation of arginines is not easily detectable on purified histones. This antibody recognizes methylated arginine 17 (R17) of histone H3, the major site of methylation by CARM1. Bauer et al (2001) have shown by using this antibody that methylated R17 exists in vivo. Chromatin immunoprecipitation analysis shows that R17 methylation on histone H3 is dramatically upregulated when the estrogen receptor-regulated pS2 gene is stimulated by estradiol and TPA. Coincident with the appearance of methylated R17, the CARM1 methyltransferase is found associated with the histones on the pS2 gene. Together these results demonstrate that the CARM1 methyltransferase is recruited to an active promoter and that CARM1-mediated methylation of histone H3 at R17 takes place in vivo during this active state.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
Concentration information loading...
PurityImmunogen affinity purified
Primary antibody notesThe nuclear hormone receptor co-activator CARM1 has the potential to methylate histone H3 at arginine residues in vitro. The methyltransferase activity of CARM1 is necessary for its co-activator functions in transient transfection assays. However, the role of this methyltransferase in vivo is unclear, given that methylation of arginines is not easily detectable on purified histones. This antibody recognizes methylated arginine 17 (R17) of histone H3, the major site of methylation by CARM1. Bauer et al (2001) have shown by using this antibody that methylated R17 exists in vivo. Chromatin immunoprecipitation analysis shows that R17 methylation on histone H3 is dramatically upregulated when the estrogen receptor-regulated pS2 gene is stimulated by estradiol and TPA. Coincident with the appearance of methylated R17, the CARM1 methyltransferase is found associated with the histones on the pS2 gene. Together these results demonstrate that the CARM1 methyltransferase is recruited to an active promoter and that CARM1-mediated methylation of histone H3 at R17 takes place in vivo during this active state.
ChIP Related Products
Our Abpromise guarantee covers the use of ab8284 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|ChIP/Chip||Use at an assay dependent concentration.|
|PepArr||Use a concentration of 0.002 - 0.0002 µg/ml.|
|IHC-P||Use at an assay dependent concentration.|
|ICC/IF||Use a concentration of 0.1 µg/ml.|
|ChIP||Use at an assay dependent concentration.|
|Dot blot||Use at an assay dependent concentration.|
|IP||Use at an assay dependent concentration.|
|WB||1/1000 - 1/2000.|
FunctionCore 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 similaritiesBelongs to the histone H3 family.
Developmental stageExpressed during S phase, then expression strongly decreases as cell division slows down during the process of differentiation.
modificationsAcetylation 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 localizationNucleus. Chromosome.
- Information by UniProt
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Anti-Histone H3 (asymmetric di methyl R17) antibody (ab8284) at 1 µg/ml + HeLa Histone Preparation Nuclear Lysate at 2.5 µg/ml
Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 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?
Additional bands at: 55 kDa, 60 kDa, 90 kDa. We are unsure as to the identity of these extra bands.
Exposure time: 2 minutes
All batches of ab8284 are tested in Peptide Array against peptides to different Histone H3 modifications. Six dilutions of each peptide are printed on to the Peptide Array in triplicate and results are averaged before being plotted on to a graph. Results show strong binding to Histone H3 - asymmetric di methyl R17 peptide (ab16935), indicating that this antibody specifically recognises the Histone H3 - asymmetric di methyl R17 modification.
ICC/IF image of ab8284 stained MCF7 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 (ab8284, 0.1µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899, DyLight® 488 goat anti-rabbit IgG (H+L) used at a 1/250 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.
Total U2OS cell extract was western blotted using the anti-Me-R17H3 antibody. The asterisk indicates methylated histone H3. The left panel shows presence of core histones (indicated on the left) by Coomassie Blue staining. Molecular weights are indicated on the right.
A dot blot was performed using unmodified peptide (lane 1), Histone H3 mono methyl R17 peptide (lane 2), Histone H3 asymmetric di methyl R17 peptide (lane 3) and Histone H3 symmetric di methyl R17 peptide (lane 4). The dot blot indicates that ab8284 is specific to Histone H3 asymmetric di methyl R17.
ab8284 was used in immunohistochemistry with paraffin embedded sections of human tonsil, using DAB as a chromogen (brown). Counterstaining of nuclei was performed with haemotoxylin (blue).
Staining is seen confined to the nucleus.
This product has been referenced in:
- Gao Y & Ge W The histone methyltransferase DOT1L inhibits osteoclastogenesis and protects against osteoporosis. Cell Death Dis 9:33 (2018). Read more (PubMed: 29348610) »
- Cheng D et al. CARM1 methylates MED12 to regulate its RNA-binding ability. Life Sci Alliance 1:e201800117 (2018). Read more (PubMed: 30456381) »