The structural basis for deadenylation by the CCR4-NOT complex

Protein Cell. 2010 May;1(5):443-52. doi: 10.1007/s13238-010-0060-8. Epub 2010 Jun 4.

Abstract

The CCR4-NOT complex is a highly conserved, multifunctional machinery controlling mRNA metabolism. Its components have been implicated in several aspects of mRNA and protein expression, including transcription initiation, elongation, mRNA degradation, ubiquitination, and protein modification. In this review, we will focus on the role of the CCR4-NOT complex in mRNA degradation. The complex contains two types of deadenylase enzymes, one belonging to the DEDD-type family and one belonging to the EEP-type family, which shorten the poly(A) tails of mRNA. We will review the present state of structure-function analyses into the CCR4-NOT deadenylases and summarize current understanding of their roles in mRNA degradation. We will also review structural and functional work on the Tob/BTG family of proteins, which are known to interact with the CCR4-NOT complex and which have been reported to suppress deadenylase activity in vitro.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Humans
  • Multiprotein Complexes / chemistry*
  • Multiprotein Complexes / genetics
  • Multiprotein Complexes / metabolism*
  • Protein Conformation
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism*
  • Transcription Factors / chemistry*
  • Transcription Factors / genetics
  • Transcription Factors / metabolism*

Substances

  • CNOT1 protein, human
  • Multiprotein Complexes
  • RNA, Messenger
  • Transcription Factors