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Building on the Ccr4-Not architecture.
Journal article

Building on the Ccr4-Not architecture.

  • Villanyi Z Faculty of Medicine, Department of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland.
  • Collart MA Faculty of Medicine, Department of Microbiology and Molecular Medicine, University of Geneva, Geneva, Switzerland. martine.collart@unige.ch.
  • 2016-08-23
Published in:
  • BioEssays : news and reviews in molecular, cellular and developmental biology. - 2016
Ccr4-Not complex
architecture
deadenylation
mRNA circularization
mRNA decay
protein folding
subunit localization
Cytoplasm
Gene Expression Regulation
RNA, Messenger
Schizosaccharomyces
English In a recent issue of Nature Communications Ukleja and co-workers reported a cryo-EM 3D reconstruction of the Ccr4-Not complex from Schizosaccharomyces pombe with an immunolocalization of the different subunits. The newly gained architectural knowledge provides cues to apprehend the functional diversity of this major eukaryotic regulator. Indeed, in the cytoplasm alone, Ccr4-Not regulates translational repression, decapping and deadenylation, and the Not module additionally plays a positive role in translation. The spatial distribution of the subunits within the structure is compatible with a model proposing that the Ccr4-Not complex interacts with the 5' and 3' ends of target mRNAs, allowing different functional modules of the complex to act at different stages of the translation process, possibly within a circular constellation of the mRNA. This work opens new avenues, and reveals important gaps in our understanding regarding structure and mode of function of the Ccr4-Not complex that need to be addressed in the future.
Language
  • English
Open access status
hybrid
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Persistent URL
https://sonar.ch/global/documents/213619
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