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PXD048568-1

PXD048568 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleProtein UFMylation regulates ribosomal DNA double-stranded break repair
DescriptionRibosomal DNA (rDNA) arrays are highly repetitive regions of the genome which encode essential genes required to produce ribosomes. DNA double-stranded breaks (DSBs) generated within rDNA genes elicit a unique cellular response involving robust transcriptional silencing and nucleolar reorganization into ‘cap’ structures at the nucleolar periphery. This process is coordinated by the nucleolar scaffolding protein TCOF1, which functions to recruit the DNA repair proteins NBS1 and TOPBP1 that activate the ATM and ATR kinases, resulting in ribosomal RNA (rRNA) transcriptional silencing and nucleolar segregation. However, the DNA damage and repair response at rDNA arrays remains incompletely understood. Here, we investigate the cellular response to rDNA DSBs using proteomics and genetic CRISPR-Cas9 screening. We show that the protein UFMylation pathway and the HUSH complex are important for cell viability and survival in response to rDNA DSBs, and that the E3 UFM1-ligase UFL1 and its heterodimer DDRGK1 are associated with TCOF1 at nucleolar caps. Loss of UFL1 leads to impaired ATM activation, reduced rRNA transcriptional silencing, and an overall reduction in nucleolar segregation. We identified ATM, UNC45A and SMC6 as UFMylated proteins, in which UFMylation may facilitate ATM activation and segregation of damaged rDNA to the nucleolar periphery. Altogether, our findings provide the first evidence for a role for UFMylation in rDNA DSB repair.
HostingRepositoryPRIDE
AnnounceDate2024-09-16
AnnouncementXMLSubmission_2024-09-16_09:58:04.950.xml
DigitalObjectIdentifierhttps://dx.doi.org/10.6019/PXD048568
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportSupported dataset by repository
PrimarySubmitterMarlene Oeffinger
SpeciesList scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationListNo PTMs are included in the dataset
InstrumentOrbitrap Fusion
Dataset History
RevisionDatetimeStatusChangeLog Entry
02024-01-15 14:09:51ID requested
12024-09-16 09:58:05announced
Publication List
10.6019/PXD048568;
10.1016/j.celrep.2024.114738;
Panichnantakul P, Aguilar LC, Daynard E, Guest M, Peters C, Vogel J, Oeffinger M, Protein UFMylation regulates early events during ribosomal DNA-damage response. Cell Rep, 43(9):114738(2024) [pubmed]
Keyword List
submitter keyword: TCOF1, UFMylation, hTERT-RPE1, Treacle, nucleolus, ribosomal DNA repair,LC-MSMS
Contact List
Marlene Oeffinger
contact affiliationInstitut de recherches cliniques de Montréal, Center for Genetic and Neurological Diseases,Montréal, QC, Canada Département de biochimie et médecine moléculaire, Université de Montréal, Montréal, QC, Canada Division of Experimental Medicine, McGill University, Montreal, QC, Canada
contact emailMarlene.Oeffinger@ircm.qc.ca
lab head
Marlene Oeffinger
contact affiliationInstitut de recherches cliniques Montreal (IRCM) Universite de Montreal
contact emailmarlene.oeffinger@ircm.qc.ca
dataset submitter
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Dataset FTP location
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