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PXD017379

PXD017379 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleNew insights into the architecture of the human SMC5/6 complex
DescriptionA family of Structural Maintenance of Chromosome (SMC) complexes is essential for key cellular processes ensuring proper cohesion, condensation and replication. They share common SMC-kleisin architecture allowing them to embrace DNA. The prokaryotic and eukaryotic SMC5/6 complexes contain additional kleisin-interacting KITE subunits which regulate SMC-kleisin dynamics. In SMC5/6, the Nse1 and Nse3 KITE proteins and Nse4 kleisin subunits form stable subcomplex which binds DNA and regulates essential processes. In addition, non-essential Nse5 and Nse6 subunits associate with the core SMC5/6 complex and recruit it to DNA repair sites. The architecture of the SMC5/6 complex is crucial for its proper functioning and mutations within the human SMC5/6 subunits result in severe syndromes. Therefore, we aimed to analyse interactions within the human SMC5/6 complex and determine its architecture at detail levels. First, we analysed the human hNSE1-hNSE3 dimer and the hNSE1-hNSE3-hNSE4 trimer by crosslinking and MS/MS analysis. Our data suggested domain arrangements of hNSE1-hNSE3 and orientation of hNSE4 within the trimer. The crosslinking and electron microscopy analysis of the SMC5/6 core complex showed its rod-like shaped architecture with juxtaposed hSMC5-hSMC6 arms. In addition, we observed fully or partially opened hSMC5-hSMC6 shapes with the hNSE1-hNSE3-hNSE4 trimer localized at the SMC head domains. To complete mapping of the human SMC5/6 complex architecture, we analysed positions of hNSE5-hNSE6 at the hSMC5-hSMC6 arms. Interestingly, hNSE6 bound both hSMC5-hSMC6 arms, suggesting that hNSE6 may lock the arms and regulate their dynamics. All together, we gained new insights into the architecture and dynamics of the human SMC5/6 complex.
HostingRepositoryPRIDE
AnnounceDate2023-11-14
AnnouncementXMLSubmission_2023-11-14_07:04:26.913.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterDavid Potesil
SpeciesList scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationListNo PTMs are included in the dataset
InstrumentLTQ Orbitrap Elite
Dataset History
RevisionDatetimeStatusChangeLog Entry
02020-02-04 08:24:12ID requested
12023-08-18 05:16:14announced
22023-11-14 07:04:27announced2023-11-14: Updated project metadata.
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: cross-linking mass spectrometry,human SMC5/6 complex architecture
Nse1-Nse3-Nse4 trimer
Nse5-Nse6 dimer
protein-protein interactions
Contact List
Zbynek Zdrahal
contact affiliationCEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic
contact emailzdrahal@sci.muni.cz
lab head
David Potesil
contact affiliationProteomics Core Facility and Research Group Proteomics CEITEC-MU Masaryk University Brno, Czech Republic
contact emaildavid.potesil@ceitec.muni.cz
dataset submitter
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Dataset FTP location
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PRIDE project URI
Repository Record List
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