Long open reading frame transcripts escape nonsense-mediated mRNA decay in yeast.
Fiche publication
Date publication
février 2014
Auteurs
Membres identifiés du Cancéropôle Est :
Dr SERAPHIN Bertrand
Tous les auteurs :
Decourty L, Doyen A, Malabat C, Frachon E, Rispal D, Seraphin B, Feuerbach F, Jacquier A, Saveanu C
Lien Pubmed
Résumé
Nonsense-mediated mRNA decay (NMD) destabilizes eukaryotic transcripts with long 3' UTRs. To investigate whether other transcript features affect NMD, we generated yeast strains expressing chromosomal-derived mRNAs with 979 different promoter and open reading frame (ORF) regions and with the same long, destabilizing 3' UTR. We developed a barcode-based DNA microarray strategy to compare the levels of each reporter mRNA in strains with or without active NMD. The size of the coding region had a significant negative effect on NMD efficiency. This effect was not specific to the tested 3' UTR because two other different NMD reporters became less sensitive to NMD when ORF length was increased. Inefficient NMD was not due to a lack of association of Upf1 to long ORF transcripts. In conclusion, in addition to a long 3' UTR, short translation length is an important feature of NMD substrates in yeast.
Référence
Cell Rep. 2014 Feb 27;6(4):593-8