Flow cytometric analysis of MacroH2A.1 Histone expression in HAP-1 cells using MacroH2A.1 Histone antibody. Green, isotype control; red, MacroH2A.1 Histone.
Immunocytochemical staining of HAP-1 cells with MacroH2A.1 Histone antibody. Nuclei were stained blue with DAPI; MacroH2A.1 Histone was stained magenta with Alexa Fluor? 647. Images were taken using Leica stellaris 5. Protein abundance based on laser Intensity and smart gain: High. Scale bar: 20 μm.
Western blotting analysis using MacroH2A.1 Histone antibody. Total cell lysates (30 μg) from various cell lines were loaded and separated by SDS-PAGE. The blot was incubated with MacroH2A.1 Histone antibody and HRP-conjugated goat anti-rabbit secondary antibody respectively.
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Variant histone H2A which replaces conventional H2A in a subset of nucleosomes where it represses transcription. 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. Involved in stable X chromosome inactivation. Inhibits the binding of transcription factors, including NF-kappa-B, and interferes with the activity of remodeling SWI/SNF complexes. Inhibits histone acetylation by EP300 and recruits class I HDACs, which induces a hypoacetylated state of chromatin.; Binds ADP-ribose and O-acetyl-ADP-ribose, and may be involved in ADP-ribose-mediated chromatin modulation. Increases the expression of genes involved in redox metabolism, including SOD3.; Represses SOD3 gene expression.
基因功能參考文獻(xiàn):
This article points to a splicing-regulated, proto-oncogenic role for the macroH2A1.2 variant and suggests manipulation of macroH2A1.2 expression as a potential therapeutic means to interfere with tumorigenesis. PMID: 29249653
The Skp2-mH2A1-CDK8 axis has a critical role in breast cancer development via dysregulation of the G2/M transition, polyploidy, cell growth dysregulation, and loss of tumor suppression. PMID: 25818643
We show that composite nucleosomes containing mH2A and NRF-1 are stably positioned on gene regulatory regions and can buffer transcriptional noise associated with antiviral responses PMID: 25959814
High MacroH2A1 expression is associated with epigenetic markers for activation of lipogenic genes in fat-induced steatosis. PMID: 25526730
macroH2A1.1 expression correlates with poor survival of triple-negative breast cancer patients PMID: 24911873
MacroH2A1.1 and PARP-1 cooperate to regulate transcription by promoting CBP-mediated H2B acetylation. PMID: 25306110
MacroH2A1 specifically recruits PELP1 to the promoters of macroH2A1 target genes, but macroH2A1 occupancy occurs independent of PELP1. This recruitment allows macroH2A1 and PELP1 to cooperatively regulate gene expression outcomes. PMID: 24752897
The results demonstrate that macroH2A1 is a new factor involved in the regulation of rDNA transcription. PMID: 24071584
macro histone variants (macroH2A) are expressed at low levels in stem cells and are up-regulated during differentiation PMID: 23595991
Both macroH2A1 isoforms may play a role in hepatocellular carcinoma pathogenesis and may be considered as novel diagnostic markers for human hepatocellular carcinoma. PMID: 23372727
MacroH2A1 splicing isoforms differentially regulate the transcription of a set of genes involved in redox metabolism. PMID: 23022728
The histone variant macroH2A1.1 is recruited to DNA double-strand breaks through a mechanism involving PARP1. PMID: 23031826
Within the macro domain of mH2A1.2, a trinucleotide insertion (-EIS-) sequence not found in mH2A1.1 was essential for the interaction between HER-2 and mH2A1.2 as well as mH2A1.2-induced HER-2 expression and cell proliferation. PMID: 22589551
ATRX (alpha-thalassemia/MR, X-linked) is a novel macroH2A-interacting protein PMID: 22391447
H2AFY is specifically overexpressed in the blood and frontal cortex of patients with Huntington disease compared with controls PMID: 21969577
macroH2A can play either a positive or negative role in transcriptional regulation in a context-dependent manner. Additionally, macroH2A has been linked to the control of the cell cycle and cell proliferation. PMID: 20543561
significant inverse correlation between mH2A and CDK8 expression levels exists in melanoma patient samples PMID: 21179167
distributed during the maintainance phase of x inactivation throughout cell cycle PMID: 12082075
MACROH2A1 deposition is regulated by the CULLIN3/SPOP ligase complex and is actively involved in stable X inactivation. PMID: 15897469
A specific interaction between mH2A1.1 and PARP-1 was demonstrated and found to be associated with inactivation of PARP-1 enzymatic activity. PMID: 17158748
multiple short sequences dispersed along the macroH2A1 histone domain individually supported enrichment on the inactive X chromosome when introduced into H2A PMID: 17570398
A phosphorylation site, S137ph, was identified in mH2A1;S137ph is enriched in mitosis. PMID: 18227505
expression of histone macroH2A1.1 and macroH2A2 predicts lung cancer recurrence. PMID: 19648962
show that distinct macrodomains, including those of histone macroH2A1.1, are recruited to sites of PARP1 activation induced by laser-generated DNA damage. PMID: 19680243
an unexpected role for macroH2A1 in the escape from heterochromatin-associated silencing and the enhancement of autosomal gene transcription PMID: 20008927