PXD040338-2

PXD040338 is an original dataset announced via ProteomeXchange.

Title	A farnesyl-dependent structural role for CENP-E in expansion of the fibrous corona
Description	Correct chromosome segregation during cell division depends on proper connections between spindle microtubules and kinetochores. During prometaphase, kinetochores are temporarily covered with a dense protein meshwork known as the fibrous corona. Formed by oligomerization of ROD/ZW10/ZWILCH-SPINDLY (RZZ-S) complexes, the fibrous corona promotes spindle assembly, chromosome orientation and spindle checkpoint signaling. The molecular requirements for formation of the fibrous corona are not fully understood. Here we show that the fibrous corona depends on the mitotic kinesin CENP-E, and that poorly expanded fibrous coronas after CENP-E depletion are functionally compromised. This previously unrecognized role for CENP-E does not require its motor activity but instead is driven by its C-terminal microtubule-binding region and farnesyl modification thereof. The ‘birth’ of a farnesylation motif in CENP-E orthologs during Obazoa evolution closely aligns with presence of the full RZZ-S module, and we show that in cells CENP-E interacts with RZZ-S complexes in a farnesyl-dependent manner. CENP-E is recruited to kinetochores following RZZ-S, and - while not required for RZZ-S oligomerization per se - promotes subsequent fibrous corona expansion. Our results show that proper spindle assembly has a non-motor contribution from the kinesin CENP-E through stabilization of the fibrous corona meshwork during its formation.
HostingRepository	PRIDE
AnnounceDate	2024-10-22
AnnouncementXML	Submission_2024-10-22_06:05:15.058.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Harmjan Vos
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	iodoacetamide derivatized residue
Instrument	Orbitrap Fusion

Revision	Datetime	Status	ChangeLog Entry
0	2023-02-22 10:19:53	ID requested
1	2023-10-09 03:03:26	announced
⏵ 2	2024-10-22 06:05:15	announced	2024-10-22: Updated project metadata.

Dataset with its publication pending

submitter keyword: CENP-E, farnesylation, kinetochores,Chromosome segregation, ROD/ZW10/ZWILCH-SPINDLY (RZZ-S) complex

J.P.L. Kops
contact affiliation	Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), Uppsalalaan 8, 3584CT, Utrecht, the Netherlands.
contact email	g.kops@hubrecht.eu
lab head
Harmjan Vos
contact affiliation	University Medical Center Utrecht Dept. Molecular Cancer Research
contact email	h.r.vos-3@umcutrecht.nl
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2023/10/PXD040338

PRIDE project URI

• PRIDE
  1. PXD040338
     1. Label: PRIDE project
     2. Name: A farnesyl-dependent structural role for CENP-E in expansion of the fibrous corona