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PXD018175-1

PXD018175 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleComplete loss of H3K9 methylation dissolves mouse heterochromatin organization
DescriptionHistone H3 lysine 9 (H3K9) methylation is a central epigenetic modification that defines heterochromatin from unicellular to multicellular organisms. In mammalian cells, H3K9 methylation can be catalyzed by at least six distinct SET domain enzymes: Suv39h1/Suv39h2, Eset1/Eset2 and G9a/Glp. We used mouse embryonic fibroblasts (MEFs) with a conditional mutation for Eset1 and introduced progressive deletions for the other SET domain genes by CRISPR/Cas9 technology. Compound mutant MEFs for all 6 SET domain methyltransferase (KMT) genes lack all H3K9 methylation states, derepress nearly all families of repeat elements and display genomic instabilities. Strikingly, the 6KO H3K9 KMT MEFs no longer maintain heterochromatin organization and have lost electron-dense heterochromatin. This is the first analysis of H3K9 methylation deficient mammalian chromatin and reveals a crucial function for H3K9 methylation in protecting heterochromatin organization and genome integrity.
HostingRepositoryPRIDE
AnnounceDate2024-10-07
AnnouncementXMLSubmission_2024-10-07_13:32:58.081.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterGerhard Mittler
SpeciesList scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationListasymmetric dimethyl-L-arginine; omega-N-methyl-L-arginine; N6-methyl-L-lysine; phosphorylated residue; N6-propanoyl-L-lysine; monohydroxylated residue; symmetric dimethyl-L-arginine; N6-acetyl-L-lysine; deamidated residue; N6,N6,N6-trimethyl-L-lysine; iodoacetamide derivatized residue; N6,N6-dimethyl-L-lysine
InstrumentQ Exactive Plus
Dataset History
RevisionDatetimeStatusChangeLog Entry
02020-03-24 23:18:16ID requested
12024-10-07 13:32:58announced
Publication List
Montavon T, Shukeir N, Erikson G, Engist B, Onishi-Seebacher M, Ryan D, Musa Y, Mittler G, Meyer AG, Genoud C, Jenuwein T, Complete loss of H3K9 methylation dissolves mouse heterochromatin organization. Nat Commun, 12(1):4359(2021) [pubmed]
10.1038/s41467-021-24532-8;
Keyword List
submitter keyword: repeat silencing, heterochromatin organization, histone methyltransferases,Proteomic quantification of H3K9 methylation, genome stability
Contact List
Gerhard Mittler
contact affiliationProteomics Unit - Research Facility Max Planck Institute of Immunobiology and Epigenetics Stübeweg 51 79108 Freiburg
contact emailmittler@ie-freiburg.mpg.de
lab head
Gerhard Mittler
contact affiliationProteomics Unit, Max Planck Institute of Immunobiology and Epigenetics
contact emailmittler@ie-freiburg.mpg.de
dataset submitter
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