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Lysine benzoylation is a novel histone mark

ABSTRACT: Lysine benzoylation is a novel histone mark

PROVIDER: PRJNA427334 | ENA |

REPOSITORIES: ENA

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Lysine benzoylation is a novel histone mark [RNA-seq]

Project description:Lysine benzoylation is a novel histone mark [RNA-seq]

| PRJNA427337 | ENA

Lysine benzoylation is a novel histone mark [ChIP-seq]

Project description:Lysine benzoylation is a novel histone mark [ChIP-seq]

| PRJNA427338 | ENA

Lysine benzoylation is a novel histone mark [ChIP-seq]

Project description:We identified and characterized a previously undescribed histone mark, lysine benzoylation. This histone mark could be modulated by sodium benzoate (SB), an FDA-approved drug and a widely used chemical food preservative, via generation of benzoyl CoA. By ChIP-seq and RNA-seq analysis, we demonstrate that histone lysine benzoylation marks are involved in regulation of gene expression and associated with diverse biological processes. This study therefore reveals a new type of physiological relevant histone mark and identifies non-conical functions of a widely used chemical food preservative.

2018-06-08 | GSE108468 | GEO

Lysine benzoylation is a novel histone mark [RNA-seq]

2018-06-08 | GSE108469 | GEO

Lysine benzoylation - Here we report the identification and characterization of a histone mark, lysine benzoylation (Kbz). Our study identifies 22 Kbz sites on histones from HepG2 and RAW cells. This type of histone mark can be stimulated by sodium benzoate (SB), a FDA-approved drug and a widely used chemical food preservative, via generation of benzoyl CoA.

Project description:Here we report the identification and characterization of a histone mark, lysine benzoylation (Kbz). Our study identifies 22 Kbz sites on histones from HepG2 and RAW cells. This type of histone mark can be stimulated by sodium benzoate (SB), a FDA-approved drug and a widely used chemical food preservative, via generation of benzoyl CoA.

2020-10-02 | MSV000086228 | MassIVE

2018-07-11 | PXD010332 | Pride

Identification of 67 histone marks and histone lysine crotonylation as a new type of histone modification

Project description:We report the identification of 67 previously undescribed histone modifications, increasing the current number of known histone marks by about 70%. We further investigated one of the marks, lysine crotonylation (Kcr), confirming that it represents an evolutionarily-conserved histone posttranslational modification. The unique structure and genomic localization of histone Kcr suggest that it is mechanistically and functionally different from histone lysine acetylation (Kac). Specifically, in both human somatic and mouse male germ cell genomes, histone Kcr marks either active promoters or potential enhancers. In male germinal cells immediately following meiosis, Kcr is enriched on sex chromosomes and specifically marks testis-specific genes, including a significant proportion of X-linked genes that escape sex chromosome inactivation in haploid cells. These results therefore dramatically extend the repertoire of histone PTM sites and designate Kcr as a specific mark of active sex chromosome-linked genes in postmeiotic male germ cells. 2 histone marks (pan-lysine acetylation and pan-lysine crotonylation) were studied in 1 human cell type and 2 mouse cell types using ChIP-Seq. Input was sequenced for each cell type as a control. Pan-anti_Kac and pan-anti_Kcr antibodies were custom developed with PTM BioLab, Co., Ltd (Chicago, IL).

2011-10-06 | E-GEOD-32663 | biostudies-arrayexpress

Chromatin proteomics reveals novel combinatorial histone modification signatures that mark distinct subpopulations of macrophage enhancers

Project description:The integrated activity of cis-regulatory elements fine-tunes transcriptional programs of mammalian cells by recruiting cell type–specific as well as ubiquitous transcription factors (TFs). Despite their key role in modulating transcription, enhancers are still poorly characterized at the molecular level, and their limited DNA sequence conservation in evolution and variable distance from target genes make their unbiased identification challenging. The coexistence of high mono-methylation and low tri-methylation levels of lysine 4 of histone H3 is considered a signature of enhancers, but a comprehensive view of histone modifications associated to enhancers is still lacking. By combining chromatin immunoprecipitation (ChIP) with mass spectrometry, we investigated cis-regulatory regions in macrophages to comprehensively identify histone marks specifically associated with enhancers, and to profile their dynamics after transcriptional activation elicited by an inflammatory stimulation. The intersection of the proteomics data with ChIP-seq and RNA-seq analyses revealed the existence of novel subpopulations of enhancers, marked by specific histone modification signatures: specifically, H3K36me2/K4me1 marks transcribed enhancers, while H3K36me3/K4me1 and H3K79me2/K4me1 combinations mark distinct classes of intronic enhancers. Thus, our MS analysis of functionally distinct genomic regions revealed the combinatorial code of histone modifications, highlighting the potential of proteomics in addressing fundamental questions in epigenetics.

2017-10-09 | PXD007582 | Pride

Metabolic Regulation of Gene Expression by Histone Lysine Ã-hydroxybutyrylation [ChIP-seq]

Project description:We identified a new type of histone mark-lysine Ã-hydroxybutyrylation (Kbhb). This ketone body derived histone mark (Kbhb) was dramatically induced in livers during starvation. To charactize histopne Kbhb: 1) We mapped genomic distributions of histone Kbhb marks (H3K9bhb, H3K4bhb and H4K8bhb) by ChIP-seq in mouse liver. 2) We examined the response of histone Kbhb mark to starvation by carrying out ChIP-seq experiments for H3K9bhb in both "starved" and "fed" mouse liver. 3) We also examined differentially-expressed genes during starvation by carrying out RNA-seq experiments in both "starved" and "fed" mouse liver. By integrating analyses of ChIP-seq and RNA-seq data, we tried to get a correlation between H3K9bhb mark and gene expression in response to starvation. Sequencing was performed on the HiSeq2000 (Illumina). ChIP-seq for histone Kbhb marks in both "starved (ST)" and "fed (AL)" mouse liver cells The anti-H3K4bhb, -H3K9bhb, and -H4K8bhb antibodies were generated from PTM biolabs. The process for generating antibodies were described similarly in Cell, 2011. 146: p. 1016-1028, Mol Cell, 2015. 58(2): p. 203-15, Nat Chem Biol, 2014. 10(5): p. 365-70, except for using different immunogens.

2016-04-06 | E-GEOD-69615 | biostudies-arrayexpress

KMT9 writes the histone mark H4K12me1 and controls metabolism and proliferation of castration-resistant prostate cancer cells

Project description:Posttranslational modifications of histones such as methylation regulate chromatin structure and gene expression. Methylation of histone lysine residues is generally performed by SET domain methyltransferases. Here, we identify the heterodimeric C21orf127/TRMT112 complex as a specific histone methyltransferase. Assembly of the seven-b-strand protein C21orf127 (also named Hemk2, N6amt1 or PrmC) with TRMT112 is essential to form an active enzyme, hereafter named KMT9 that writes the histone mark H4K12me1 in vitro and in vivo. The H4K12me1 mark is enriched at promoters of KMT9 target genes and co-localises with the active histone mark H4K12ac. By controlling expression of genes involved in energy metabolism, KMT9 regulates oxidative phosphorylation in androgen receptor-dependent and -independent prostate tumour cells. Importantly, KMT9 depletion severely affects proliferation of castration and enzalutamide-resistant prostate cancer cells and xenograft tumours. Together, our data link the writing of the H4K12me1 histone mark by KMT9 with KMT9-dependent gene expression, which in consequence regulates energy metabolism and proliferation. KMT9 executes these functions independently of androgen receptor and androgen signalling thus, providing a promising paradigm for the treatment of castration resistant prostate cancer.

2019-03-11 | PXD008965 | Pride

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