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GlcNAcylation of histone H2B facilitates its monoubiquitination [Affymetrix data]

ABSTRACT: We have found that histone H2B is GlcNAcylated at residue S112 by O-GlcNAc transferase and that H2B S112 GlcNAcylation fluctuates in response to extracellular glucose level. We have also found that H2B S112 GlcAcylation promotes H2B K120 ubiquitination. To investigate whether these histone modification correlate to transcriptional activation, we performed comprehensive gene expression analysis using Affymetrix GeneChip in HeLa cell cultured with different conditions, i.e. without glucose, with glucose and with FBS.

ORGANISM(S): Homo sapiens

PROVIDER: GSE33050 | GEO | 2011/10/27

SECONDARY ACCESSION(S): PRJNA156567

REPOSITORIES: GEO

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GlcNAcylation of histone H2B facilitates its monoubiquitination [Affymetrix data]

Project description:We have found that histone H2B is GlcNAcylated at residue S112 by O-GlcNAc transferase and that H2B S112 GlcNAcylation fluctuates in response to extracellular glucose level. We have also found that H2B S112 GlcAcylation promotes H2B K120 ubiquitination. To investigate whether these histone modification correlate to transcriptional activation, we performed comprehensive gene expression analysis using Affymetrix GeneChip in HeLa cell cultured with different conditions, i.e. without glucose, with glucose and with FBS. HeLa cells were cultured in DMEM with the following three conditions, 1) DMEM without glucose for 24 hours, 2) DMEM without glucose for 24 hours and followed by treatment with 4.5 g/L glucose for another 24 hours, 3) normal culture condition (DMEM with FBS). Total RNA was purified from these cells and each RNA was linearly amplified and hybridized to Affymetrix GeneChip.

2011-10-26 | E-GEOD-33050 | biostudies-arrayexpress

GlcNAcylation of histone H2B facilitates its monoubiquitination [Illumina Genome Analyzer data]

Project description:We report that histone GlcNAcylation of H2B S112 is a vital histone modification which facilitates histone monoubiquitination (ub). In a genome-wide analysis, H2B S112 GlcNAcylation sites were observed widely distributed over entire chromosomes including transcribed gene loci, together with co-localization of H2B S112 GlcNAcylation and K120 ub. Examination of H2B S112 GlcNAc and H2B K120 ub in HeLa S3 cells

2011-10-27 | E-GEOD-33049 | biostudies-arrayexpress

GlcNAcylation of histone H2B facilitates its monoubiquitination [Illumina Genome Analyzer data]

2011-10-27 | GSE33049 | GEO

GlcNAcylation of histone H2B facilitates its monoubiquitination

Project description:This SuperSeries is composed of the following subset Series: GSE33049: GlcNAcylation of histone H2B facilitates its monoubiquitination [Illumina Genome Analyzer data] GSE33050: GlcNAcylation of histone H2B facilitates its monoubiquitination [Affymetrix data] Refer to individual Series

2011-10-26 | E-GEOD-33051 | biostudies-arrayexpress

Dot1L recruits OGT target chromatin to regulate histones O-GlcNAcylation

Project description:OGT (O-GlcNAc transferase) is the distinctive enzyme responsible for catalyzing O-GlcNAc to the serine or threonine residues of thousands of cytoplasm and nuclear proteins that are involved in DNA damage, RNA splicing, and transcription preinitiation and initiation complex assembly. However, the molecular mechanism by OGT regulating gene transcription remains elusive. Using proximity labeling based mass spectrometry, we searched for functional partners of OGT and found that Dot1L, the conserved and unique histone methyltransferase mediated histone H3 lys79 methylation required for gene transcription, DNA damage repair, cell proliferation, and embryo development, interacts with OGT. Although this specific interaction does not regulate the enzymatic activity of Dot1L, it facilitates OGT-dependent histones O-GlcNAcylation. Moreover, OGT associates with Dot1L at transcription start sites, and depleting Dot1L decreased OGT associated with chromatin globally. Notably, downregulation of Dot1L reduces the levels of histone H2B S112 O-GlcNAcylation and histone H2B K120 ubiquitination in vivo, which are associated with gene transcription regulation. Taken together, these results reveal a Dot1L-dependent O-GlcNAcylation of chromatin.

2022-04-06 | GSE200059 | GEO

OGT, H2B S112GlcNAc, TET2 ChIP-seq results

Project description:TET2 directly interacts with OGT, which is important for the chromatin association of OGT in vivo. Although this specific interaction does not regulate the enzymatic activity of TET2, it facilitates OGT-dependent histone O-GlcNAcylation. Moreover, OGT associates with TET2 at transcription starting sites (TSS). Down-regulation of TET2 reduces the amount of H2B S112 GlcNAc marks in vivo, which are associated with gene transcription regulation.

2012-12-11 | GSE41720 | GEO

OGT, H2B S112GlcNAc, TET2 ChIP-seq results

2012-12-11 | E-GEOD-41720 | biostudies-arrayexpress

GlcNAcylation of histone H2B facilitates its monoubiquitination.

Project description: Not available

| S-EPMC7289526 | biostudies-literature

Identification of histone modifications reveals an association of H2b monoubiquitination with gonadal transdifferentiation

Project description:Gonadal trans-differentiation from ovary to testis occurs in a same individual, suggesting a role of epigenetic regulation. However, histone modifications concerning the sex reversal process remain elusive. Here, we report a developmental atlas of histone modifications in the gonadal differentiation, including acetylation, methylation, and ubiquitination, using liquid chromatography-tandem mass spectrometry (LC-MS/MS). We provided a detail distribution map of these modification sites including novel histone modifications along histones H2a, H2b, H3, and H4, and revealed their relationship with types of gonadal differentiation. We then determined a testis-enriched histone modification site, H2b monoubiquitination at K120, and its association with spermatogenesis. ChIP-seq demonstrated that the modification was highly enriched in the male sex-determining gene dmrt1, in particular association with its exon regions, suggesting its role in transcriptional elongation of dmrt1 in testis. Together, these data not only provide a new resource for epigenetic study in gonadal development, but also define an association of histone modifications in gonadal differentiation from ovary to testis.

2021-06-30 | GSE168541 | GEO

GlcNAcylation of histone H2B facilitates its monoubiquitination

Project description:This SuperSeries is composed of the SubSeries listed below.

2011-10-27 | GSE33051 | GEO