Saitoh S, et al. (2002) Cid13 is a cytoplasmic poly(A) polymerase that regulates ribonucleotide reductase mRNA. Cell 109(5):563-73
Abstract: Fission yeast Cid13 and budding yeast Trf4/5 are members of a newly identified nucleotidyltransferase family conserved from yeast to man. Trf4/5 are thought to be essential DNA polymerases. We report that Cid13 is a poly(A) polymerase. Unlike conventional poly(A) polymerases, which act in the nucleus and indiscriminately polyadenylate all mRNA, Cid13 is a cytoplasmic enzyme that specifically targets suc22 mRNA that encodes a subunit of ribonucleotide reductase (RNR). cid13 mutants have reduced dNTP pools and are sensitive to hydroxyurea, an RNR inhibitor. We propose that Cid13 defines a cytoplasmic form of poly(A) polymerase important for DNA replication and genome maintenance.
|Status: Published||Type: Journal Article | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S.||PubMed ID: 12062100|
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