PXD017379 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | New insights into the architecture of the human SMC5/6 complex |
Description | A 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. |
HostingRepository | PRIDE |
AnnounceDate | 2023-11-14 |
AnnouncementXML | Submission_2023-11-14_07:04:26.913.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | David Potesil |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | No PTMs are included in the dataset |
Instrument | LTQ Orbitrap Elite |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2020-02-04 08:24:12 | ID requested | |
1 | 2023-08-18 05:16:14 | announced | |
⏵ 2 | 2023-11-14 07:04:27 | announced | 2023-11-14: 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 affiliation | CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic |
contact email | zdrahal@sci.muni.cz |
lab head | |
David Potesil |
contact affiliation | Proteomics Core Facility and Research Group Proteomics CEITEC-MU Masaryk University Brno, Czech Republic |
contact email | david.potesil@ceitec.muni.cz |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD017379
- Label: PRIDE project
- Name: New insights into the architecture of the human SMC5/6 complex