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Coupling between snoRNP assembly and 3' processing controls box C/D snoRNA biosynthesis in yeast
journal contribution
posted on 2004-06-16, 00:00 authored by M Morlando, M Ballarino, P Greco, E Caffarelli, Bernhard DichtlBernhard Dichtl, I BozzoniRNA polymerase II transcribes genes encoding proteins and a large number of small stable RNAs. While pre-mRNA 3'-end formation requires a machinery ensuring tight coupling between cleavage and polyadenylation, small RNAs utilize polyadenylation-independent pathways. In yeast, specific factors required for snRNA and snoRNA 3'-end formation were characterized as components of the APT complex that is associated with the core complex of the cleavage/polyadenylation machinery (core-CPF). Other essential factors were identified as independent components: Nrd1p, Nab3p and Sen1p. Here we report that mutations in the conserved box D of snoRNAs and in the snoRNP-specific factor Nop1p interfere with transcription and 3'-end formation of box C/D snoRNAs. We demonstrate that Nop1p is associated with box C/D snoRNA genes and that it interacts with APT components. These data suggest a mechanism of quality control in which efficient transcription and 3'-end formation occur only when nascent snoRNAs are successfully assembled into functional particles.
History
Journal
EMBO journalVolume
23Issue
12Pagination
2392 - 2401Publisher
Nature Publishing GroupLocation
London, EnglandPublisher DOI
ISSN
0261-4189eISSN
1460-2075Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2004, Nature Publishing GroupUsage metrics
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