The putative nucleic acid helicase Sen1p is required for formation and stability of termini and for maximal rates of synthesis and levels of accumulation of small nucleolar RNAs in Saccharomyces cerevisiae.

Abstract excerpt

Sen1p from Saccharomyces cerevisiae is a nucleic acid helicase related to DEAD box RNA helicases and type I DNA helicases. The temperature-sensitive sen1-1 mutation located in the helicase motif alters the accumulation of pre-tRNAs, pre-rRNAs, and some small nuclear RNAs. In this report, we show that cells carrying sen1-1 exhibit altered accumulation of several small nucleolar RNAs (snoRNAs) immediately upon...

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