PXD022676-1

PXD022676 is an original dataset announced via ProteomeXchange.

Title	The TUTase URT1 connects decapping activators and prevents the accumulation of excessively deadenylated mRNAs to avoid siRNA biogenesis
Description	Uridylation is a widespread modification destabilizing eukaryotic mRNAs. Yet, molecular mechanisms underlying TUTase-mediated mRNA degradation remain mostly unresolved. Here, we report that the Arabidopsis TUTase URT1 participates in a molecular network connecting several translational repressors/decapping activators. URT1 directly interacts with DECAPPING 5 (DCP5), the Arabidopsis ortholog of human LSM14 and yeast Scd6, and this interaction connects URT1 to additional decay factors like DDX6/Dhh1-like RNA helicases. Nanopore direct RNA sequencing reveals a global role of URT1 in shaping poly(A) tail length, notably by preventing the accumulation of excessively deadenylated mRNAs. Based on in vitro and in planta data, we propose a model that explains how URT1 could reduce the accumulation of oligo(A)-tailed mRNAs both by favoring their degradation and because 3’ terminal uridines intrinsically hinder deadenylation. Importantly, preventing the accumulation of excessively deadenylated mRNAs avoids the biogenesis of illegitimate siRNAs that silence endogenous mRNAs and perturb Arabidopsis growth and development.
HostingRepository	PRIDE
AnnounceDate	2020-12-01
AnnouncementXML	Submission_2020-12-01_00:17:11.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD022676
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Lauriane Kuhn
SpeciesList	scientific name: Nicotiana tabacum (Common tobacco); NCBI TaxID: 4097;
ModificationList	phosphorylated residue; acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2020-11-23 09:32:10	ID requested
⏵ 1	2020-12-01 00:17:11	announced

Dataset with its publication pending

submitter keyword: Uridylation, TUTase, RNA degradation, decapping, deadenylation, Arabidopsis, DCP5, GIGYF, Nanopore DRS

Dominique Gagliardi
contact affiliation	1Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue Zimmer, 67000 Strasbourg, France.
contact email	dominique.gagliardi@ibmp-cnrs.unistra.fr
lab head
Lauriane Kuhn
contact affiliation	CNRS, IBMC, FRC1589
contact email	l.kuhn@ibmc-cnrs.unistra.fr
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/2020/12/PXD022676

PRIDE project URI

• PRIDE
  1. PXD022676
     1. Label: PRIDE project
     2. Name: The TUTase URT1 connects decapping activators and prevents the accumulation of excessively deadenylated mRNAs to avoid siRNA biogenesis