PMID- 24260526 OWN - NLM STAT- MEDLINE DCOM- 20140630 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 11 DP - 2013 TI - Multiple transcripts from a 3'-UTR reporter vary in sensitivity to nonsense-mediated mRNA decay in Saccharomyces cerevisiae. PG - e80981 LID - 10.1371/journal.pone.0080981 [doi] LID - e80981 AB - Nonsense-mediated mRNA decay (NMD) causes accelerated transcript degradation when a premature translation termination codon disrupts the open reading frame (ORF). Although endogenous transcripts that have uninterrupted ORFs are typically insensitive to NMD, some can nonetheless become prone to NMD when translation terminates at out-of-frame premature stop codons. This occurs when introns containing stop codons fail to be spliced, when translation of an upstream ORF (uORF) terminates in the 5'-untranslated region (5'-UTR) or the coding region, or when the 5'-proximal AUG initiation codon is bypassed and translation initiates at a downstream out-of-frame AUG followed by a stop codon. Some 3'-untranslated regions (3'-UTRs) are also known to trigger NMD, but the mechanism is less well understood. To further study the role of 3'-UTRs in NMD, a reporter system was designed to examine 3'-UTRs from candidate genes known to produce NMD-sensitive transcripts. Out of eight that were tested, the 3'-UTRs from MSH4 and SPO16 caused NMD-dependent mRNA destabilization. Both endogenous genes produce multiple transcripts that differ in length at the 3' end. Detailed studies revealed that the longest of six reporter MSH4-3'-UTR transcripts was NMD-sensitive but five shorter transcripts were insensitive. NMD-dependent degradation of the long transcript required Xrn1, which degrades mRNA from the 5' end. Sensitivity to NMD was not associated with extensive translational read-through past the normal stop codon. To our knowledge, this is the first example where multiple transcripts containing the same ORF are differentially sensitive to NMD in Saccharomyces cerevisiae. The results provide a proof of principle that long 3'-UTRs can trigger NMD, which suggests a potential link between errors in transcription termination or processing and mRNA decay. FAU - Zaborske, John M AU - Zaborske JM AD - Laboratory of Genetics and Laboratory of Cell and Molecular Biology, University of Wisconsin, Madison, Wisconsin, United States of America. FAU - Zeitler, Bethany AU - Zeitler B FAU - Culbertson, Michael R AU - Culbertson MR LA - eng GR - T32 HG002760/HG/NHGRI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20131118 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (3' Untranslated Regions) RN - 0 (5' Untranslated Regions) RN - 0 (Codon, Nonsense) RN - 0 (DNA-Binding Proteins) RN - 0 (MSH4 protein, S cerevisiae) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Saccharomyces cerevisiae Proteins) RN - 0 (Spo16 protein, S cerevisiae) RN - EC 3.1.- (Exoribonucleases) RN - EC 3.1.11.- (XRN1 protein, S cerevisiae) SB - IM MH - *3' Untranslated Regions MH - 5' Untranslated Regions MH - *Alternative Splicing MH - Codon, Nonsense MH - DNA-Binding Proteins/genetics/metabolism MH - Exons MH - Exoribonucleases/genetics/metabolism MH - *Gene Expression Regulation, Fungal MH - Genes, Reporter MH - Introns MH - Microtubule-Associated Proteins/genetics/metabolism MH - *Nonsense Mediated mRNA Decay MH - Open Reading Frames MH - Saccharomyces cerevisiae/*genetics/metabolism MH - Saccharomyces cerevisiae Proteins/genetics/metabolism MH - *Transcription, Genetic PMC - PMC3832414 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/11/22 06:00 MHDA- 2014/07/01 06:00 PMCR- 2013/11/18 CRDT- 2013/11/22 06:00 PHST- 2013/09/05 00:00 [received] PHST- 2013/10/17 00:00 [accepted] PHST- 2013/11/22 06:00 [entrez] PHST- 2013/11/22 06:00 [pubmed] PHST- 2014/07/01 06:00 [medline] PHST- 2013/11/18 00:00 [pmc-release] AID - PONE-D-13-36648 [pii] AID - 10.1371/journal.pone.0080981 [doi] PST - epublish SO - PLoS One. 2013 Nov 18;8(11):e80981. doi: 10.1371/journal.pone.0080981. eCollection 2013.