PXD053401

PXD053401 is an original dataset announced via ProteomeXchange.

Title	Distinct intersecting pathways link homolog pairing to initiation of meiotic chromosome synapsis
Description	Faithful meiotic segregation requires pairwise alignment of the homologous chromosomes and Synaptonemal Complex assembly (SC) at their interface. Here, we investigate on new factors that promote and coordinate these events during C. elegans meiosis. We identify BRA-2 (BMP Receptor Associated family member 2) as an interactor of HIM-17, previously shown to promote double-strand break formation. We found that loss of bra-2 specifically impairs synapsis licensing without affecting homologs recognition, SC maintenance or chromosome movement. Double mutant analysis revealed a previously unrecognized role for HIM-17 in promoting homolog pairing under dysfunctional SC assembly, without perturbing nuclear envelope recruitment of factors required for chromosome movement. We provide evidence that bra-2 and him-17 act in distinct pathways, exerting partially redundant functions in SC licensing, as well as separable roles in regulating homologs pairing. Altogether, our findings unveil novel mechanisms that ensure stabilization of homologous chromosome interaction via SC licensing upon homology assessment.
HostingRepository	PRIDE
AnnounceDate	2025-03-14
AnnouncementXML	Submission_2025-03-14_02:34:30.695.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Katerina Hanakova
SpeciesList	scientific name: Caenorhabditis elegans; NCBI TaxID: 6239;
ModificationList	No PTMs are included in the dataset
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2024-06-25 09:27:41	ID requested
⏵ 1	2025-03-14 02:34:31	announced

10.1038/S41467-025-57862-Y;

submitter keyword: Caenorhabditis elegans, BRA-2, HIM-17, LC-MS/MS

Zbynek Zdrahal
contact affiliation	Proteomics Core Facility and Research Group Proteomics, CEITEC-MU, Masaryk University, Brno, Czech Republic
contact email	zdrahal@sci.muni.cz
lab head
Katerina Hanakova
contact affiliation	CEITEC MU
contact email	katerina.hanak@gmail.com
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/2025/03/PXD053401

PRIDE project URI

• PRIDE
  1. PXD053401
     1. Label: PRIDE project
     2. Name: Distinct intersecting pathways link homolog pairing to initiation of meiotic chromosome synapsis