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PXD045191

PXD045191 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleDirect recruitment of Mis18 to interphase spindle poles promotes CENP-A chromatin assembly.
DescriptionCENP-A chromatin specifies mammalian centromere identity, and its chaperone HJURP replenishes CENP-A when recruited by the Mis18 complex (Mis18C) via M18BP/KNL2 to CENP-C at kinetochores during interphase. However, the Mis18C recruitment mechanism remains unresolved in species lacking M18BP1, such as fission yeast. Fission yeast centromeres cluster at G2 spindle pole bodies (SPBs) when CENP-ACnp1 is replenished and where Mis18C also localizes. We show that SPBs play an unexpected role in concentrating Mis18C near centromeres through the recruitment of Mis18 by direct binding to the major SPB LInker of Nucleoskeleton and Cytoskeleton (LINC) complex component Sad1. Mis18 recruitment by Sad1 is important for CENP-ACnp1 chromatin establishment and acts in parallel with a CENP-C-mediated Mis18C recruitment pathway to maintain centromeric CENP-ACnp1, but is independent of Sad1-mediated centromere clustering. SPBs therefore provide a non-chromosomal scaffold for both Mis18C recruitment and centromere clustering during G2. This centromere-independent Mis18-SPB recruitment provides a mechanism that governs de novo CENP-ACnp1 chromatin assembly by the proximity of appropriate sequences to SPBs and highlights how nuclear spatial organization influences centromere identity.
HostingRepositoryPRIDE
AnnounceDate2024-10-22
AnnouncementXMLSubmission_2024-10-22_06:03:14.658.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterNitobe London
SpeciesList scientific name: Schizosaccharomyces pombe 927; NCBI TaxID: 1264690;
ModificationListNo PTMs are included in the dataset
InstrumentOrbitrap Fusion Lumos
Dataset History
RevisionDatetimeStatusChangeLog Entry
02023-09-07 05:05:30ID requested
12023-09-18 01:29:12announced
22023-11-14 08:54:46announced2023-11-14: Updated project metadata.
32024-10-22 06:03:15announced2024-10-22: Updated project metadata.
Publication List
10.1016/J.CUB.2023.08.063;
Keyword List
submitter keyword: Mis18 complex, fission yeast,CENP-A chromatin, centromere
Contact List
Robin Allshire
contact affiliationUniversity of Edinburgh
contact emailrobin.allshire@ed.ac.uk
lab head
Nitobe London
contact affiliationUniversity of Edinburgh
contact emailnitobelondon@gmail.com
dataset submitter
Full Dataset Link List
Dataset FTP location
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PRIDE project URI
Repository Record List
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