Insights into the structure of the CCR4-NOT complex by electron microscopy

Fariborz Nasertorabi, Claire Batisse, Meikel Diepholz, Dietrich Suck, Bettina Boettcher

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The CCR4-NOT complex is a deadenylation complex, which plays a major role for mRNA stability. The complex is conserved from yeast to human and consists of nine proteins NOT1-NOT5, CCR4, CAF1, CAF40 and CAF130. We have successfully isolated the complex using a Protein A tag on NOT1, followed by cross-linking on a glycerol gradient. All components of the complex were identified by mass spectrometry. Electron microscopy of negatively stained particles followed by image reconstruction revealed an L-shaped complex with two arms of similar length. The arms form an accessible cavity, which we think could provide an extensive interface for RNA-deadenylation.

Structured summary of protein interactions:

CAF1 physically interacts with CCR4 and NOT1 by tandem affinity purification (View interaction) (C) 2011 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)2182-2186
Number of pages5
JournalFEBS Letters
Issue number14
Publication statusPublished - 21 Jul 2011


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