PXD049971

PXD049971 is an original dataset announced via ProteomeXchange.

Title	Arabidopsis AGO1 N-terminal extension acts as an essential hub for PRMT5 interaction and post-translational modifications
Description	Plant ARGONAUTE (AGO) proteins play pivotal roles in gene expression regulation through small (s)RNA-guided mechanisms. Among the ten AGO proteins in Arabidopsis thaliana, AGO1 stands out as the main effector of post-transcriptional gene silencing. Intriguingly, a specific region of AGO1, its N-terminal extension (NTE), has gained prominence in recent studies linked to diverse regulatory functions, including subcellular localization, sRNA loading, and interactions with regulatory factors. In the realm of post-translational modifications (PTMs), little is known about arginine methylation in Arabidopsis AGOs. This study reveals a novel and intricate landscape of AGO1 methylation. Here, we have elucidated that NTEAGO1 undergoes symmetric arginine dimethylation on specific residues, and interacts with the methyltransferase PRMT5, which catalyzes its methylation. Notably, we observed that the lack of symmetric dimethylarginine has no discernible impact on AGO1's subcellular localization or miRNA loading capabilities. However, the absence of PRMT5 significantly alters the loading of a subgroup of sRNAs into AGO1 and reshapes the NTEAGO1 interactome. Importantly, our research extends beyond AGO1, illustrating that symmetric arginine dimethylation of NTEs is a common process across Arabidopsis AGOs, taking place in AGO1, AGO2, AGO3, and AGO5, deepening our understanding of PTMs in the intricate landscape of RNA-associated gene regulation.
HostingRepository	PRIDE
AnnounceDate	2024-05-22
AnnouncementXML	Submission_2024-05-22_10:21:25.721.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Germán Rosano
SpeciesList	scientific name: Arabidopsis thaliana (Mouse-ear cress); NCBI TaxID: 3702;
ModificationList	iodoacetamide derivatized residue
Instrument	Orbitrap Fusion

Revision	Datetime	Status	ChangeLog Entry
0	2024-02-20 11:38:24	ID requested
⏵ 1	2024-05-22 10:21:26	announced

10.1093/NAR/GKAE387;

submitter keyword: argonaute,arginine methylation, arabidopsis

Nicolás Bologna
contact affiliation	Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Bellaterra, Barcelona 08193, Spain
contact email	nicolas.bologna@cragenomica.es
lab head
Germán Rosano
contact affiliation	Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET-UNR)
contact email	rosano@ibr-conicet.gov.ar
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/2024/05/PXD049971

PRIDE project URI

• PRIDE
  1. PXD049971
     1. Label: PRIDE project
     2. Name: Arabidopsis AGO1 N-terminal extension acts as an essential hub for PRMT5 interaction and post-translational modifications