PXD068119-1

PXD068119 is an original dataset announced via ProteomeXchange.

Title	A developmental condensin I complex assists the Paramecium PiggyMac domesticated transposase during programmed DNA elimination
Description	Prokaryotes and eukaryotes use diverse strategies to cope with invading mobile genetic elements, including programmed DNA elimination (PDE). In the ciliate Paramecium, elimination of transposable elements and their relics requires the PiggyMac (Pgm) endonuclease and its five PgmL partners, yet how this machinery is targeted to cleavage sites remains unclear. Here, we identified condensin I subunits in the proximity proteomes of Pgm and PgmL4. We show that they belong to a condensin complex that is essential for PDE and localizes to developing somatic nuclei. Depleting the development-specific subunits of this complex blocks DNA elimination, phenocopying a Pgm depletion. Developmental condensin is required for the correct nuclear localization of Pgm and some of the PgmLs. Moreover, Pgm and these PgmLs co-immunoprecipitate with condensin I. Our findings uncover functional and physical interactions between a eukaryotic DNA cleavage machinery and a specialized condensin complex that is critical for PDE in a non-dividing nucleus.
HostingRepository	PRIDE
AnnounceDate	2026-04-01
AnnouncementXML	Submission_2026-04-01_10:37:55.895.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Guillaume CHEVREUX
SpeciesList	scientific name: Paramecium tetraurelia; NCBI TaxID: NEWT:5888;
ModificationList	monohydroxylated residue; deaminated residue; iodoacetamide derivatized residue
Instrument	timsTOF Pro 2

Revision	Datetime	Status	ChangeLog Entry
0	2025-09-05 03:25:28	ID requested
⏵ 1	2026-04-01 10:37:56	announced

Dataset with its publication pending

submitter keyword: ciliate, transposable element, condensin, endonuclease,SMC, Programmed DNA elimination

Mireille Betermier
contact affiliation	Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
contact email	mireille.betermier@i2bc.paris-saclay.fr
lab head
Guillaume CHEVREUX
contact affiliation	Institut Jacques Monod, CNRS UMR7592
contact email	guillaume.chevreux@ijm.fr
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD068119
     1. Label: PRIDE project
     2. Name: A developmental condensin I complex assists the Paramecium PiggyMac domesticated transposase during programmed DNA elimination