An actin remodeling role for Arabidopsis processing bodies revealed by their proximity interactome
Abstract: Cellular condensates can comprise membrane‐less ribonucleoprotein assemblies with liquid‐like properties. These cellular condensates influence various biological outcomes, but their liquidity hampers their isolation and characterization. Here, we investigated the composition of the condensates known as processing bodies (PBs) in the model plant Arabidopsis thaliana through a proximity‐biotinylation proteomics approach. Using in situ protein–protein interaction approaches, genetics and high‐resolution dynamic imaging, we show that processing bodies comprise networks that interface with membranes. Surprisingly, the conserved component of PBs, DECAPPING PROTEIN 1 (DCP1), can localize to unique plasma membrane subdomains including cell edges and vertices. We characterized these plasma membrane interfaces and discovered a developmental module that can control cell shape. This module is regulated by DCP1, independently from its role in decapping, and the actin‐nucleating SCAR–WAVE complex, whereby the DCP1–SCAR–WAVE interaction confines and enhances actin nucleation. This study reveals an unexpected function for a conserved condensate at unique membrane interfaces.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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An actin remodeling role for Arabidopsis processing bodies revealed by their proximity interactome ; day:06 ; month:02 ; year:2023 ; extent:33
The EMBO journal / European Molecular Biology Organization ; (06.02.2023) (gesamt 33)
- Urheber
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Liu, Chen
Mentzelopoulou, Andriani
Muhammad, Amna
Volkov, Andriy
Weijers, Dolf
Gutierrez‐Beltran, Emilio
Moschou, Panagiotis N.
- DOI
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10.15252/embj.2022111885
- URN
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urn:nbn:de:101:1-2023020614213924060614
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:52 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Liu, Chen
- Mentzelopoulou, Andriani
- Muhammad, Amna
- Volkov, Andriy
- Weijers, Dolf
- Gutierrez‐Beltran, Emilio
- Moschou, Panagiotis N.
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