2-hydroxyisobutyryl-HIST1H3A (K14) Antibody

Shipped with Ice Packs
In Stock

Description

Antigen Overview

HIST1H3A (Histone Cluster 1 H3 Family Member A) is a core component of nucleosomes, essential for DNA packaging and transcriptional regulation . The 2-hydroxyisobutyryl modification at lysine 14 (K14hib) alters chromatin structure, influencing gene activation or repression. Unlike acetylation, Khib introduces bulkier acyl groups, which may uniquely affect protein interactions .

Epigenetic Profiling

The antibody enables detection of Khib in:

  • ChIP: Mapping histone modification sites genome-wide .

  • IF/ICC: Visualizing subcellular localization of Khib in fixed cells .

  • ELISA: Quantifying modification levels in lysates .

Disease Relevance

  • Cancer: Khib is elevated in pancreatic cancer (PC) and correlates with proliferation and metastasis. Inhibition of Khib via Tip60 (a Khib "writer") suppressor MG149 reduces PC cell viability and invasion .

  • Metabolic Regulation: Khib-modified proteins are enriched in metabolic pathways (e.g., glycolysis, TCA cycle), suggesting roles in cellular energy balance .

Validation and Specificity

  • Cross-Reactivity: Rigorous validation minimizes off-target binding. For example, Khib antibodies show no reactivity with unmodified or acetylated H3K14 peptides .

  • Functional Studies: In PC, antibody-based profiling identified 10,367 Khib sites across 2,325 proteins, highlighting its utility in large-scale proteomic analyses .

Key Research Findings

  • Khib in Cancer: Global Khib levels are elevated in pancreatic tumors. Knockdown experiments using MG149 reduced Khib, suppressing PC cell migration and invasion by >50% .

  • Structural Impact: Khib’s steric effects may compete with acetylation for lysine residues, creating distinct chromatin states .

Technical Considerations

  • Buffer Compatibility: Avoid freeze-thaw cycles; store in PBS with glycerol .

  • Controls: Include unmodified histone extracts to confirm specificity .

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 of receiving your order. Delivery times may vary based on the shipping method and destination. Please consult your local distributor for specific delivery information.
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, thereby restricting DNA accessibility to the cellular machinery that uses DNA as a template. Histones play a crucial role in transcription regulation, DNA repair, DNA replication, and chromosomal stability. DNA accessibility 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 that epigenetic regulation in cancer may be mediated by inducing E3 ubiquitin ligase NEDD4-dependent histone H3 ubiquitination. PMID: 28300060
  2. Increased expression of H3K27me3 during a patient's clinical course may be helpful in determining whether tumors are heterochronous. PMID: 29482987
  3. JMJD5, a Jumonji C (JmjC) domain-containing protein, has been identified 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. Data suggests that the Ki-67 antigen proliferative index has significant limitations, while phosphohistone H3 (PHH3) serves as an alternative proliferative marker. PMID: 29040195
  5. These findings identify cytokine-induced histone 3 lysine 27 trimethylation as a mechanism that stabilizes gene silencing in macrophages. PMID: 27653678
  6. This data indicates that HIST1H3B constitutes the largest proportion of H3.1 transcripts among H3.1 isoforms in the early developing human brain. PMID: 27251074
  7. In a series of 47 diffuse midline gliomas, histone H3-K27M mutation was mutually exclusive with IDH1-R132H mutation and EGFR amplification, rarely co-occurred with BRAF-V600E mutation, and was commonly associated with p53 overexpression, ATRX loss, and monosomy 10. PMID: 26517431
  8. Research demonstrates that histone chaperone HIRA co-localizes with viral genomes, binds to incoming viral, and deposits histone H3.3 onto these. PMID: 28981850
  9. Experiments have shown that PHF13 binds specifically to DNA and to 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 study describes, for the first time, 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 outcome and was shown to influence EZH2 function. PMID: 27135271
  13. H3F3A K27M mutation in adult cerebellar HGG is not uncommon. PMID: 28547652
  14. Data show 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 just after replication. PMID: 27341472
  16. SPOP-containing complex regulates SETD2 stability and H3K36me3-coupled alternative splicing. PMID: 27614073
  17. 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 formation of the preinitiation complex. PMID: 27679476
  19. Histone H3 modifications caused by traffic-derived airborne particulate matter exposures in leukocytes. 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. PMID: 27996159
  21. hTERT promoter mutations are frequent in medulloblastoma and are associated with older patients, prone to recurrence and located in the right cerebellar hemisphere. 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. Data 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. Functional importance of H3K9me3 in hypoxia, apoptosis, and repression of APAK. PMID: 25961932
  27. Taken together, the authors verified that histone H3 is a real substrate for GzmA in vivo in the Raji cells treated by staurosporin. PMID: 26032366
  28. Circulating H3 levels correlate with mortality in sepsis patients and inversely correlate with antithrombin levels and platelet counts. PMID: 26232351
  29. Data show that double mutations on the residues in the interface (L325A/D328A) decreases the histone H3 H3K4me2/3 demethylation activity of lysine (K)-specific demethylase 5B (KDM5B). PMID: 24952722
  30. Data indicate that minichromosome maintenance protein 2 (MCM2) binding is not required for incorporation of histone H3.1-H4 into chromatin but is important for stability of H3.1-H4. PMID: 26167883
  31. 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. Data indicate that lower-resolution mass spectrometry instruments can be utilized for histone post-translational modifications (PTMs) analysis. PMID: 25325711
  34. Data indicate that inhibition of lysine-specific demethylase 1 activity prevented IL-1beta-induced histone H3 lysine 9 (H3K9) demethylation at 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 is regulated by a histone H3K9 acetyl/methyl balance. PMID: 22473132

Show More

Hide All

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.

Quick Inquiry

Personal Email Detected
Please use an institutional or corporate email address for inquiries. Personal email accounts ( such as Gmail, Yahoo, and Outlook) are not accepted. *
© Copyright 2025 TheBiotek. All Rights Reserved.