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GenomicsThe Mediator complex subunit MED23 couples H2B mono-ubiquitination to transcriptional control and cell fate determination
The Mediator complex orchestrates multiple transcription factors with the Pol II apparatus for precise transcriptional control. However, its interplay with the surrounding chromatin remains poorly understood. Here, we analyze differential histone modifications between WT and MED23-/- (KO) cells and ...
ORGANISM(S): Mus musculus 
2015-09-16 | E-GEOD-59518 | biostudies-arrayexpress
ModelsNguyenLK2011 - Ubiquitination dynamics in Ring1B/Bmi1 system
NguyenLK2011 - Ubiquitination dynamics in Ring1B-Bmi1 system This theoretical model investigates the dynamics of Ring1B/Bmi1 ubiquitination to identify bistable switch-like and oscillatory behaviour in the system. Michaelis-Menten (MM) equations are used to formulate the model. However, the authors ...
2024-09-02 | BIOMD0000000622 | BioModels
GenomicsPromoters Active in Interphase are Bookmarked during Mitosis by Ubiquitination
We analyzed genome-wide modification of chromatin by ubiquitination in human cells and whether this mark changes through the cell cycle using modified ChIP-seq technique (ChAP-seq). Chromatin affinity purification was based on a standard ChIP method with modification of a two-step affinity purificat...
ORGANISM(S): Homo sapiens 
2013-04-04 | E-GEOD-45771 | biostudies-arrayexpress
TranscriptomicsExpression data from 17 day old testes of wild type and UBR2-/- mice
Ubiquitylation of histones provides an important mechanism regulating chromatin remodeling and gene expression. Recent studies have revealed ubiquitin ligases involved in histone ubiquitylation, yet the responsible enzymes and the function of histone ubiquitination in spermatogenesis remain unclear....
ORGANISM(S): Mus musculus 
2010-03-03 | E-GEOD-18824 | biostudies-arrayexpress
ProteomicsIdentification of ubiquitination sites of purified histone H3
Histones modulate gene expression by chromatin compaction, regulating numerous processes such as differentiation. However, the mechanisms underlying histone degradation remain elusive. When compared with their differentiated counterparts, immortal human embryonic stem cells (hESCs) have a unique chr...
ORGANISM(S): Homo sapiens (Human) 
2020-06-01 | PXD018621 | Pride
Epigenetics Ubiquitination Histone h3 
ProteomicsTwo DOT1 enzymes cooperatively mediate efficient ubiquitin-independent histone H3 lysine 76 tri-methylation in kinetoplastids
In higher eukaryotes, a single DOT1 histone H3 lysine 79 (H3K79) methyltransferase processively produces H3K79me2/me3 from me0 through histone H2B mono-ubiquitin interaction. The early-branched kinetoplastid Trypanosoma brucei harbors the essential H3K76 di-methyltransferase DOT1A and the non-essent...
ORGANISM(S): Trypanosoma Brucei (ncbitaxon:5691) 
2022-11-09 | MSV000090680 | MassIVE
ProteomicsHistone ubiquitination-methylation crosstalk involving UHRF1 and SUV39H1/2 reinforces heterochromatin states in response to DNA hypomethylation
Histone H3 mono-ubiquitination, catalyzed by the RING E3 ubiquitin ligase UHRF1, is appreciated as a docking site for DNMT1 during DNA replication to facilitate DNA methylation maintenance. Its functions beyond this are unknown. Here, we identify simultaneous increases in UHRF1-dependent H3K18ub and...
ORGANISM(S): Homo sapiens (Human) 
2024-12-02 | PXD049993 | Pride
Uhrf1 Suv39h1/2 Epigenetic therapy Histone ubiquitination Dna methylation Histone methylation 
ProteomicsAn optimized and robust workflow for quantifying the canonical histone ubiquitination marks H2AK119ub and H2BK120ub by LC-MS/MS
The eukaryotic genome is packaged around histone proteins, which are subject to a myriad of post-translational modifications. By controlling DNA accessibility and the recruitment of protein complexes that mediate chromatin-related processes, these modifications constitute a key mechanism of epigenet...
ORGANISM(S): Homo Sapiens Mus Musculus 
2024-12-10 | PXD053212 | panorama
TranscriptomicsThe histone H2B ubiquitin ligase RNF20 is required for MLL-rearranged leukemia
MLL-fusions are potent oncogenes that initiate aggressive forms of acute leukemia. As aberrant transcriptional regulators, MLL-fusion proteins alter gene expression in hematopoietic cells through interactions with the histone H3 lysine 79 (H3K79) methyltransferase DOT1L. Notably, interference with M...
ORGANISM(S): Mus musculus 
2013-02-19 | E-GEOD-43725 | biostudies-arrayexpress
GenomicsHistone Variants and H2A Ubiquitination [Cut&Tag]
Histone Variants and H2A Ubiquitination [Cut&Tag]
PRJNA1068024 | ENA
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