The role of mammalian poly(A)-binding proteins in co-ordinating mRNA turnover

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The function of cytoplasmic PABPs [poly(A)-binding proteins] in promoting mRNA translation has been intensively studied. However, PABPs also have less clearly defined functions in mRNA turnover including roles in default deadenylation, a major rate-limiting step in mRNA decay, as well as roles in the regulation of mRNA turnover by cis-acting control elements and in the detection of aberrant mRNA transcripts. In the present paper, we review our current understanding of the complex roles of PABP1 in mRNA turnover, focusing on recent progress in mammals and highlighting some of the major questions that remain to be addressed.
Original languageEnglish
Pages (from-to)856-64
Number of pages9
JournalBiochemical Society Transactions
Issue number4
Publication statusPublished - Aug 2012


  • Animals
  • MicroRNAs
  • Poly(A)-Binding Proteins
  • RNA, Messenger


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