An essential snRNA from S. cerevisiae has properties predicted for U4, including interaction with a U6-like snRNA

Paul G. Siliciano, David A. Brow, Heli Roiha, Christine Guthrie

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

Three yeast snRNAs (snR20, snR7, and snR14) have been implicated in pre-mRNA splicing. snR20 and snR7 contain domains of homology to U2 and U5, respectively, and each is required for viability. These RNAs are found associated with the spliceosome, as is snR14. We show here that snR14 is also an essential gene product. Sequence analysis reveals that, like snR7 and snR20, snR14 contains a consensus binding site for the Sm antigen, a feature common to all mammalian snRNAs involved in splicing. Moreover, snR14 exhibits several blocks of sequence and structural homology to U4, which in metazoans is found in association with U6. Native gel electrophoresis demonstrates that snR14 is in fact base-paired with another yeast snRNA, designated snR6, which has primary sequence homology to U6. We conclude that snR14 is the yeast analog of U4.

Original languageEnglish (US)
Pages (from-to)585-592
Number of pages8
JournalCell
Volume50
Issue number4
DOIs
StatePublished - Aug 14 1987

Fingerprint Dive into the research topics of 'An essential snRNA from S. cerevisiae has properties predicted for U4, including interaction with a U6-like snRNA'. Together they form a unique fingerprint.

  • Cite this