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Polyadenylation is an essential processing step for most eukaryotic mRNAs. In the nucleus, poly(A) polymerase adds poly(A) tails to mRNA 3' ends, contributing to their export, stability and translatability. Recently, a novel class of non-canonical poly(A) polymerases was discovered in yeast, worms and vertebrates. Different members of the Cid1 family, named after its founding member in the fission yeast Schizosaccharomyces pombe, are localized in the nucleus and the cytoplasm and are thought to target specific RNAs for polyadenylation. Polyadenylation of a target RNA by a Cid1-like poly(A) polymerase can lead to its degradation or stabilization, depending on the enzyme involved. Cid1-like proteins have important roles in diverse biological processes, including RNA surveillance pathways, DNA integrity checkpoint responses and RNAi-dependent heterochromatin formation.

Original publication

DOI

10.1002/yea.1408

Type

Journal article

Journal

Yeast

Publication Date

15/10/2006

Volume

23

Pages

991 - 1000

Keywords

Conserved Sequence, Gene Expression Regulation, Fungal, Models, Biological, Polyadenylation, Polynucleotide Adenylyltransferase, RNA Stability, RNA, Fungal, RNA, Messenger, Schizosaccharomyces, Schizosaccharomyces pombe Proteins