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PXD026407-1

PXD026407 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleLoss of full-length hnRNP R isoform impairs DNA damage response in motoneurons by inhibiting Yb1 recruitment to chromatin
DescriptionNeurons critically rely on the functions of RNA-binding proteins to maintain their polarity and resistance to neurotoxic stresses. HnRNP R has a diverse range of post-transcriptional regulatory functions and is important for neuronal development by regulating axon growth. Hnrnpr pre-mRNA undergoes alternative splicing to produce transcripts encoding two isoforms: a full-length protein and a shorter form lacking the N-terminal acidic domain. While the neuronal defects produced by total hnRNP R depletion have been investigated before, the individual functions of each hnRNP R isoforms are unknown. We generated a Hnrnpr knockout mouse (Hnrnprtm1a/tm1a) showing selective loss of the full-length hnRNP R isoform. Motoneurons cultured from Hnrnprtm1a/tm1a mice did not show any axonal growth defects. However, they show an accumulation of double-strand breaks and an impaired DNA damage response. Proteomic analysis of the hnRNP R interactome revealed the multifunctional protein Yb1 as a top interactor. Yb1 depleted motoneurons also exhibit defects in DNA damage repair. We show that Yb1 is recruited to chromatin upon DNA damage, a mechanism that is dependent on full-length hnRNP R. Our findings thus suggest a novel role of hnRNP R in maintaining genomic integrity and highlight the function of its Nterminal acidic domain in this context.
HostingRepositoryPRIDE
AnnounceDate2021-11-01
AnnouncementXMLSubmission_2021-11-01_07:49:54.472.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterMario Oroshi
SpeciesList scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationListmonohydroxylated residue; acetylated residue; iodoacetamide derivatized residue
InstrumentOrbitrap Exploris 480
Dataset History
RevisionDatetimeStatusChangeLog Entry
02021-06-01 21:58:11ID requested
12021-11-01 07:49:54announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: hnRNP R, Yb1, DNA damage, motoneuron
Contact List
Matthias Mann
contact affiliationMax-Planck-Institute of Biochemistry
contact emailmmann@biochem.mpg.de
lab head
Mario Oroshi
contact affiliationProteomics
contact emailoroshi@biochem.mpg.de
dataset submitter
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