PXD021895 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Hijacking of transcriptional condensates by endogenous retroviruses |
Description | Heterochromatin plays essential roles in repressing retrotransposons, e.g. endogenous retroviruses (ERVs) during mammalian development, but the contribution of retrotransposition to lethality observed in embryonic cells deficient for heterochromatin-mediated ERV repression is poorly understood. Here we report that selective degradation of the TRIM28 heterochromatin adapter protein leads to reduced association of transcriptional condensates with loci encoding super-enhancer -driven pluripotency genes in embryonic stem cells, a collapse of the pluripotency transcriptional circuit, and a pre-lethal restriction of pluripotent lineages in mouse embryos. De-repressed ERVs recruit transcriptional condensates in the absence of TRIM28, and ERV RNA facilitates condensation of RNA Polymerase II in vitro. We propose that retrotransposons contribute to the genomic distribution of nuclear condensates, and that RNA species may facilitate “hijacking” of transcriptional condensates in various developmental and disease contexts. |
HostingRepository | PRIDE |
AnnounceDate | 2022-07-08 |
AnnouncementXML | Submission_2022-07-08_06:38:04.886.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | David Meierhofer |
SpeciesList | scientific name: Mus musculus (Mouse); NCBI TaxID: 10090; |
ModificationList | iodoacetamide derivatized residue |
Instrument | Q Exactive HF |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2020-10-08 06:47:43 | ID requested | |
⏵ 1 | 2022-07-08 06:38:05 | announced | |
2 | 2023-11-14 08:51:38 | announced | 2023-11-14: Updated project metadata. |
Publication List
Keyword List
submitter keyword: heterochromatin, transposable elements, transcriptional condensates |
Contact List
Alexander Meissner |
contact affiliation | Max Planck Institute for Molecular Genetics Department of Genome Regulation Ihnestraße 63-73 14195 Berlin, Germany |
contact email | meissner@molgen.mpg.de |
lab head | |
David Meierhofer |
contact affiliation | Mass Spectrometry Facility MPIMG |
contact email | meierhof@molgen.mpg.de |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD021895
- Label: PRIDE project
- Name: Hijacking of transcriptional condensates by endogenous retroviruses