Novel roles of the multi-functional CCR4-NOT complex in post-transcriptional regulation

Toshifumi Inada, Shiho Makino

Research output: Contribution to journalReview articlepeer-review

29 Citations (Scopus)

Abstract

The CCR4-NOT complex is a highly conserved specific gene silencer that also serves more general post-transcriptional functions. Specific regulatory proteins including the miRNA-induced silencing complex and its associated proteins, bind to 3'-UTR elements of mRNA and recruit the CCR4-NOT complex thereby promoting poly(A) shortening and repressing translation and/or mRNA degradation. Recent studies have shown that the CCR4-NOT complex that is tethered to mRNA by such regulator(s) represses translation and facilitates mRNA decay independent of a poly(A) tail and its shortening. In addition to deadenylase activity, the CCR4-NOT complex also has an E3 ubiquitin ligase activity and is involved in a novel protein quality control system, i.e., co-translational proteasomal-degradation of aberrant proteins. In this review, we describe recent progress in elucidation of novel roles of the multi-functional complex CCR4-NOT in post-transcriptional regulation.

Original languageEnglish
Article number135
JournalFrontiers in Genetics
Volume5
Issue numberMAY
DOIs
Publication statusPublished - 2014

Keywords

  • Deadenylation
  • Decapping
  • Proteasome
  • Protein quality control
  • Translation
  • Ubiquitin-protein ligases
  • mRNA stability
  • miRNA

ASJC Scopus subject areas

  • Molecular Medicine
  • Genetics
  • Genetics(clinical)

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