HIST1H3A (Histone Cluster 1 H3a) is a core histone involved in chromatin structure. Post-translational modifications (PTMs) at specific residues regulate its function:
Phosphorylation at Ser28 (H3S28ph): Linked to mitotic chromosome condensation and transcriptional regulation.
Acetylation at Lys27 (H3K27ac): Associated with active enhancers and gene activation.
No validated antibodies target "acetylated Ser28" due to biochemical incompatibility. Available reagents focus on H3S28 phosphorylation or H3K27 acetylation.
Phospho-Histone H3 (Ser28) Antibodies
Antibody Name
Host
Clonality
Applications
Key Research Findings
Source(s)
ab5169
Rabbit
Polyclonal
WB, ICC/IF, PepArr
Detects H3S28ph in mitotic cells; validated in HeLa and Drosophila models.
ab10543 (HTA28)
Rat
Monoclonal
ICC/IF, WB, Flow Cytometry
Used to study H3S28ph dynamics in neural stem cells and cancer cell lines.
eFluor™ HTA28
Rat
Monoclonal
Flow Cytometry
Demonstrates H3S28ph's role in cell transformation via MAP kinase signaling.
Acetyl-Histone H3 (Lys27) Antibodies
Antibody Name
Host
Clonality
Applications
Key Research Findings
Source(s)
ab177178
Rabbit
Monoclonal
ChIP, WB, IHC
Detects H3K27ac in cancer models; validated in TSA-treated HeLa cells.
CSB-PA010097OA139phHU
Rabbit
Polyclonal
WB, IF, ChIP
Targets H2AFX phospho-S139 but cross-validated for H3 acetylation studies.
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Histone H3A is a core component of the nucleosome, a fundamental unit of chromatin. Nucleosomes wrap and compact DNA, limiting its accessibility to cellular machinery that requires DNA as a template. This role makes histones central to the regulation of transcription, DNA repair, DNA replication, and chromosomal stability. The accessibility of DNA is regulated through a complex set of post-translational modifications of histones, known as the histone code, and nucleosome remodeling.
Gene References Into Functions
Data indicate the mechanism for epigenetic regulation in cancer by inducing E3 ubiquitin ligase NEDD4-dependent histone H3 ubiquitination. PMID: 28300060
The identification of increased expression of H3K27me3 during a patient's clinical course can be helpful for determining whether the tumors are heterochronous PMID: 29482987
Research indicates that JMJD5, a Jumonji C (JmjC) domain-containing protein, functions as a Cathepsin L-type protease. It mediates histone H3 N-tail proteolytic cleavage under stress conditions that cause a DNA damage response. PMID: 28982940
Studies suggest that the Ki-67 antigen proliferative index has significant limitations, and phosphohistone H3 (PHH3) provides an alternative proliferative marker. PMID: 29040195
These results identify cytokine-induced histone 3 lysine 27 trimethylation as a mechanism that stabilizes gene silencing in macrophages PMID: 27653678
This data indicates that, in the early developing human brain, HIST1H3B constitutes the largest proportion of H3.1 transcripts among H3.1 isoforms. PMID: 27251074
This series of 47 diffuse midline gliomas demonstrated that 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
Data show that histone chaperone HIRA co-localizes with viral genomes, binds to incoming viral and deposits histone H3.3 onto these. PMID: 28981850
These experiments showed 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
Hemi-methylated CpGs DNA recognition activates UHRF1 ubiquitylation towards multiple lysines on the H3 tail adjacent to the UHRF1 histone-binding site. PMID: 27595565
We describe, for the first time, the MR imaging features of pediatric diffuse midline gliomas with histone H3 K27M mutation PMID: 28183840
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
H3F3A K27M mutation in adult cerebellar HGG is not rare. PMID: 28547652
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
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
SPOP-containing complex regulates SETD2 stability and H3K36me3-coupled alternative splicing. PMID: 27614073
Data suggest that binding of 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 H3 tail and could represent an additional layer of regulation in epigenetic processes. PMID: 28341809
The results demonstrate a novel mechanism by which Kdm4d regulates DNA replication by reducing the H3K9me3 level to facilitate formation of preinitiation complex. PMID: 27679476
Histone H3 modifications caused by traffic-derived airborne particulate matter exposures in leukocytes PMID: 27918982
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
hTERT promoter mutations are frequent 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 seem to be present in medulloblastoma. PMID: 27694758
AS1eRNA-driven DNA looping and activating histone modifications promote the expression of DHRS4-AS1 to economically control the DHRS4 gene cluster. PMID: 26864944
Data suggest that nuclear antigen Sp100C is a multifaceted histone H3 methylation and phosphorylation sensor. PMID: 27129259
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
Hemi-methylated DNA opens a closed conformation of UHRF1 to facilitate its H3 histone recognition. PMID: 27045799
Functional importance of H3K9me3 in hypoxia, apoptosis and repression of APAK. PMID: 25961932
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
We conclude that circulating H3 levels correlate with mortality in sepsis patients and inversely correlate with antithrombin levels and platelet counts. PMID: 26232351
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
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
Data suggest that histone H3 lysine methylation (H3K4me3) serves a crucial mechanistic role in leukemia stem cell (LSC) maintenance PMID: 26190263
PIP5K1A modulates ribosomal RNA gene silencing through its interaction with histone H3 lysine 9 trimethylation and heterochromatin protein HP1-alpha. PMID: 26157143
Data indicate that the lower-resolution mass spectrometry instruments can be utilized for histone post-translational modifications (PTMs) analysis. PMID: 25325711
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
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