Acetyl-HIST1H3A (K9) Antibody

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Description

Mechanism and Specificity

Acetyl-HIST1H3A (K9) Antibody targets the acetylated lysine 9 residue on histone H3.1, a core component of nucleosomes. This modification is associated with open chromatin structures, facilitating transcription factor access and gene expression. The antibody demonstrates high specificity for mono-acetylated H3K9ac, distinguishing it from unacetylated histone H3 and other acetylation sites (e.g., K14) .

Key Features:

  • Epitope: Synthetic peptide derived from human histone H3.1 acetylated at K9 .

  • Clonality: Available as polyclonal (rabbit) and monoclonal (mouse) variants .

  • Purification: Affinity-purified via Protein A or peptide columns .

Applications and Validated Uses

This antibody is widely employed in molecular biology and epigenetics research.

ApplicationDescriptionSources
Western Blot (WB)Detects H3K9ac in nuclear lysates (e.g., HeLa, NIH3T3, rat kidney cells) .
Chromatin IP (ChIP)Identifies genomic regions with H3K9ac, critical for mapping active promoters.
Immunohistochemistry (IHC)Localizes H3K9ac in tissue sections (e.g., cancer biopsies) .
ELISAQuantifies H3K9ac levels in lysates or recombinant proteins .

Species Reactivity: Human, mouse, rat .

Table 1: Antibody Characteristics

ParameterPolyclonal (Rabbit) Monoclonal (Mouse)
HostRabbitMouse (IgG1 isotype)
Concentration1–2 mg/mL (varies by supplier)1 mg/mL
Dilution RangesWB: 1:500–1:2000; IHC: 1:100–1:300WB: 1:500–1:2000; IHC: 1:50–300
Storage-20°C (PBS + glycerol/BSA/azide)-20°C (PBS + glycerol/BSA/azide)

Table 2: Performance in Key Assays

AssayFindingsSources
Peptide ArrayStrong binding to H3K9ac peptide; negligible cross-reactivity with H3K14ac .
WB SensitivityDetects 15 kDa band in nuclear lysates from human/mouse/rat cells .
ChIP EfficiencyEnriches promoter regions of actively transcribed genes (e.g., H3K9ac-marked euchromatin) .

Role in Gene Regulation

H3K9ac is a hallmark of active chromatin. Acetyl-HIST1H3A (K9) Antibody has been instrumental in:

  • Mapping Transcriptional Activity: Identifying regions of open chromatin in cancer cells and stem cells .

  • Studying Epigenetic Dysregulation: Linking H3K9ac loss to silencing of tumor suppressor genes in cancers .

Disease Associations

  • Cancer: Reduced H3K9ac levels correlate with poor prognosis in breast, lung, and colon cancers .

  • Neurodegeneration: Altered histone acetylation patterns observed in Alzheimer’s and Parkinson’s disease models .

Mechanistic Insights

  • Enzyme Interactions: Used to study histone acetyltransferase (HAT)/deacetylase (HDAC) activity .

  • Chromatin Remodeling: Demonstrates synergy with other histone modifications (e.g., H3K4me3) in transcriptional activation .

Future Directions

Emerging applications include:

  • Single-Cell Analysis: Integration with scATAC-seq to resolve chromatin accessibility at single-cell resolution .

  • Therapeutic Monitoring: Tracking H3K9ac levels in response to HDAC inhibitor therapies .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Typically, we can ship products within 1-3 business days after receiving your order. Delivery times may vary depending on the purchase method or location. Please consult your local distributors for specific delivery timeframes.
Synonyms
H3 histone family member E pseudogene antibody; H3 histone family; member A antibody; H3/A antibody; H31_HUMAN antibody; H3F3 antibody; H3FA antibody; Hist1h3a antibody; HIST1H3B antibody; HIST1H3C antibody; HIST1H3D antibody; HIST1H3E antibody; HIST1H3F antibody; HIST1H3G antibody; HIST1H3H antibody; HIST1H3I antibody; HIST1H3J antibody; HIST3H3 antibody; histone 1; H3a antibody; Histone cluster 1; H3a antibody; Histone H3 3 pseudogene antibody; Histone H3.1 antibody; Histone H3/a antibody; Histone H3/b antibody; Histone H3/c antibody; Histone H3/d antibody; Histone H3/f antibody; Histone H3/h antibody; Histone H3/i antibody; Histone H3/j antibody; Histone H3/k antibody; Histone H3/l antibody
Target Names
Uniprot No.

Target Background

Function
Histone H3 is a core component of nucleosomes. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to cellular machinery that requires DNA as a template. Consequently, histones play a crucial role in transcription regulation, DNA repair, DNA replication, and chromosomal stability. The accessibility of DNA is regulated through a complex system of post-translational modifications of histones, known as the histone code, and nucleosome remodeling.
Gene References Into Functions
  1. Research suggests a mechanism for epigenetic regulation in cancer through the induction of E3 ubiquitin ligase NEDD4-dependent histone H3 ubiquitination. PMID: 28300060
  2. The identification of increased expression of H3K27me3 during a patient's clinical course can aid in determining whether tumors are heterochronous. PMID: 29482987
  3. This research reports that JMJD5, a Jumonji C (JmjC) domain-containing protein, functions as a Cathepsin L-type protease that mediates histone H3 N-tail proteolytic cleavage under stress conditions that induce a DNA damage response. PMID: 28982940
  4. Findings indicate that the Ki-67 antigen proliferative index has significant limitations, and phosphohistone H3 (PHH3) is an alternative marker for proliferation. PMID: 29040195
  5. This data identifies cytokine-induced histone 3 lysine 27 trimethylation as a mechanism that stabilizes gene silencing in macrophages. PMID: 27653678
  6. This study indicates that, in the early developing human brain, HIST1H3B constitutes the largest proportion of H3.1 transcripts among H3.1 isoforms. PMID: 27251074
  7. In a series of 47 diffuse midline gliomas, the histone H3-K27M mutation was mutually exclusive with IDH1-R132H mutation and EGFR amplification, rarely co-occurred with BRAF-V600E mutation, and was frequently associated with p53 overexpression, ATRX loss, and monosomy 10. Among these K27M+ diffuse midline gliomas, further investigations revealed specific characteristics. PMID: 26517431
  8. Research demonstrates that the histone chaperone HIRA co-localizes with viral genomes, binds to incoming viral particles, and deposits histone H3.3 onto these. PMID: 28981850
  9. Experiments have shown that PHF13 specifically binds to DNA and two types of histone H3 methyl tags (lysine 4-tri-methyl or lysine 4-di-methyl), where it functions as a transcriptional co-regulator. PMID: 27223324
  10. Hemi-methylated CpGs DNA recognition activates UHRF1 ubiquitylation towards multiple lysines on the H3 tail adjacent to the UHRF1 histone-binding site. PMID: 27595565
  11. This research provides, for the first time, a description of the MR imaging features of pediatric diffuse midline gliomas with histone H3 K27M mutation. PMID: 28183840
  12. Approximately 30% of pediatric high-grade gliomas (pedHGG) including GBM and DIPG harbor a lysine 27 mutation (K27M) in histone 3.3 (H3.3), which is correlated with poor outcomes and has been shown to influence EZH2 function. PMID: 27135271
  13. The H3F3A K27M mutation in adult cerebellar HGG is not uncommon. PMID: 28547652
  14. Research indicates that lysyl oxidase-like 2 (LOXL2) is a histone modifier enzyme that removes trimethylated lysine 4 (K4) in histone H3 (H3K4me3) through an amino-oxidase reaction. PMID: 27735137
  15. Histone H3 lysine 9 (H3K9) acetylation was most prevalent when the Dbf4 transcription level was highest, whereas the H3K9me3 level was greatest during and immediately after replication. PMID: 27341472
  16. The SPOP-containing complex regulates SETD2 stability and H3K36me3-coupled alternative splicing. PMID: 27614073
  17. This data suggests that binding of the helical tail of histone 3 (H3) with PHD ('plant homeodomain') fingers of BAZ2A or BAZ2B (bromodomain adjacent to zinc finger domain 2A or 2B) requires molecular recognition of secondary structure motifs within the H3 tail and could represent an additional layer of regulation in epigenetic processes. PMID: 28341809
  18. The results demonstrate a novel mechanism by which Kdm4d regulates DNA replication by reducing the H3K9me3 level to facilitate the formation of the preinitiation complex. PMID: 27679476
  19. Histone H3 modifications caused by traffic-derived airborne particulate matter exposures in leukocytes have been observed. PMID: 27918982
  20. A key role of persistent histone H3 serine 10 or serine 28 phosphorylation in chemical carcinogenesis through regulating gene transcription of DNA damage response genes has been identified. PMID: 27996159
  21. hTERT promoter mutations are frequently observed in medulloblastoma and are associated with older patients, prone to recurrence, and located in the right cerebellar hemisphere. On the other hand, histone 3 mutations do not appear to be present in medulloblastoma. PMID: 27694758
  22. AS1eRNA-driven DNA looping and activating histone modifications promote the expression of DHRS4-AS1 to economically control the DHRS4 gene cluster. PMID: 26864944
  23. Research suggests that nuclear antigen Sp100C is a multifaceted histone H3 methylation and phosphorylation sensor. PMID: 27129259
  24. The authors propose that histone H3 threonine 118 phosphorylation via Aurora-A alters the chromatin structure during specific phases of mitosis to promote timely condensin I and cohesin disassociation, which is essential for effective chromosome segregation. PMID: 26878753
  25. Hemi-methylated DNA opens a closed conformation of UHRF1 to facilitate its H3 histone recognition. PMID: 27045799
  26. The functional importance of H3K9me3 in hypoxia, apoptosis, and repression of APAK has been established. PMID: 25961932
  27. Taken together, the authors verified that histone H3 is a genuine substrate for GzmA in vivo in Raji cells treated with staurosporin. PMID: 26032366
  28. This research concludes that circulating H3 levels correlate with mortality in sepsis patients and inversely correlate with antithrombin levels and platelet counts. PMID: 26232351
  29. Data indicate that double mutations on the residues in the interface (L325A/D328A) decrease the histone H3 H3K4me2/3 demethylation activity of lysine (K)-specific demethylase 5B (KDM5B). PMID: 24952722
  30. Research suggests that minichromosome maintenance protein 2 (MCM2) binding is not required for the incorporation of histone H3.1-H4 into chromatin but is important for the stability of H3.1-H4. PMID: 26167883
  31. This data suggests that histone H3 lysine methylation (H3K4me3) plays a crucial mechanistic role in leukemia stem cell (LSC) maintenance. PMID: 26190263
  32. PIP5K1A modulates ribosomal RNA gene silencing through its interaction with histone H3 lysine 9 trimethylation and heterochromatin protein HP1-alpha. PMID: 26157143
  33. This research indicates that lower-resolution mass spectrometry instruments can be utilized for histone post-translational modifications (PTMs) analysis. PMID: 25325711
  34. This study indicates that inhibition of lysine-specific demethylase 1 activity prevented IL-1beta-induced histone H3 lysine 9 (H3K9) demethylation at the microsomal prostaglandin E synthase 1 (mPGES-1) promoter. PMID: 24886859
  35. The authors report that de novo CENP-A assembly and kinetochore formation on human centromeric alphoid DNA arrays are regulated by a histone H3K9 acetyl/methyl balance. PMID: 22473132

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Database Links

HGNC: 4766

OMIM: 137800

KEGG: hsa:8350

STRING: 9606.ENSP00000444823

UniGene: Hs.132854

Involvement In Disease
Glioma (GLM)
Protein Families
Histone H3 family
Subcellular Location
Nucleus. Chromosome.

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