Product nameAnti-Histone H4 (di methyl K20) antibody
See all Histone H4 primary antibodies
DescriptionMouse monoclonal to Histone H4 (di methyl K20)
SpecificityRecognizes dimethylated lysine 20 of histone H4.
Tested applicationsSuitable for: IHC-P, WBmore details
Species reactivityReacts with: Human
Predicted to work with: a wide range of other species
Synthetic peptide within Human Histone H4 (di methyl K20). The exact sequence is proprietary.
- WB: Acid extract of HeLa cells and recombinant histone H4. IHC-P: Human cervix FFPE tissue sections.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.035% Sodium azide
Constituents: 30% Glycerol, Tissue culture supernatant
PurityTissue culture supernatant
Purification notesConcentrated culture supernatant.
Our Abpromise guarantee covers the use of ab51878 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IHC-P||1/200. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
|WB||1/500 - 1/2000. Detects a band of approximately 14 kDa (predicted molecular weight: 11 kDa).|
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 H4 family.
modificationsAcetylation at Lys-6 (H4K5ac), Lys-9 (H4K8ac), Lys-13 (H4K12ac) and Lys-17 (H4K16ac) occurs in coding regions of the genome but not in heterochromatin.
Citrullination at Arg-4 (H4R3ci) by PADI4 impairs methylation.
Monomethylation and asymmetric dimethylation at Arg-4 (H4R3me1 and H4R3me2a, respectively) by PRMT1 favors acetylation at Lys-9 (H4K8ac) and Lys-13 (H4K12ac). Demethylation is performed by JMJD6. Symmetric dimethylation on Arg-4 (H4R3me2s) by the PRDM1/PRMT5 complex may play a crucial role in the germ-cell lineage.
Monomethylated, dimethylated or trimethylated at Lys-21 (H4K20me1, H4K20me2, H4K20me3). Monomethylation is performed by SET8. Trimethylation is performed by SUV420H1 and SUV420H2 and induces gene silencing.
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. Monoubiquitinated at Lys-92 of histone H4 (H4K91ub1) in response to DNA damage. The exact role of H4K91ub1 in DNA damage response is still unclear but it may function as a licensing signal for additional histone H4 post-translational modifications such as H4 Lys-21 methylation (H4K20me).
Sumoylated, which is associated with transcriptional repression.
Cellular localizationNucleus. Chromosome.
- Information by UniProt
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IHC image of Histone (di methyl K20) staining in human cervix formalin fixed paraffin embedded tissue section, performed on a Leica Bond system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab51878, 1/200 dilution, for 15 mins 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.
For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.
All lanes : Anti-Histone H4 (di methyl K20) antibody (ab51878) at 1/2000 dilution
Lane 1 : acid extract of HeLa cells at 10 µg
Lane 2 : recombinant histone H4 at 0.2 µg
Predicted band size: 11 kDa
Observed band size: 14 kDa why is the actual band size different from the predicted?
ab51878 has not yet been referenced specifically in any publications.