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Form, function, and regulation of ARGONAUTE proteins
Allison Mallory1, Hervé Vaucheret
1Institut Jean-Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique, 78026 Versailles Cedex, France. allison.mallory@versailles.inra.fr
The Plant Cell
|December 25, 2010
Summary
Gene silencing mechanisms, transcriptional (TGS) and posttranscriptional (PTGS), regulate gene expression and defend genomes. This review details ARGONAUTE proteins, key players in these processes across eukaryotes, focusing on Arabidopsis thaliana.
Area of Science:
- Molecular Biology
- Genetics
- Plant Science
Background:
- Transcriptional (TGS) and posttranscriptional gene silencing (PTGS) are crucial eukaryotic mechanisms for genome defense and gene regulation.
- These processes manage invasive nucleic acids (viruses, transposons) and control gene expression during development and environmental responses.
Purpose of the Study:
- To review the general features of ARGONAUTE (AGO) proteins in plants and animals.
- To provide a detailed overview of the 10 AGO proteins found in Arabidopsis thaliana.
Main Methods:
- Literature review of existing research on gene silencing and AGO proteins.
- Comparative analysis of AGO protein families across different species.
- Focus on the specific characteristics and roles of the 10 AGO proteins in Arabidopsis thaliana.
Main Results:
- AGO proteins are conserved across eukaryotes and form the catalytic core of silencing complexes.
- These complexes are guided by small RNAs to target specific RNA molecules.
- The review consolidates current knowledge on the diverse functions and characteristics of the 10 Arabidopsis AGO proteins.
Conclusions:
- ARGONAUTE proteins are central to both transcriptional and posttranscriptional gene silencing in eukaryotes.
- Understanding Arabidopsis AGO proteins provides insights into conserved gene regulatory networks.
- This review serves as a comprehensive resource on plant AGO proteins and their roles in genome integrity and gene expression.
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