Abstract
Abstract Two unlinked mutations that alter the enzyme activity of tRNA-splicing endonuclease have been identified in yeast. The sen1-1 mutation, which maps on chromosome 12, causes temperature-sensitive growth, reduced in vitro endonuclease activity, and in vivo accumulation of unspliced pre-tRNAs. The sen2-1 mutation does not confer a detectable growth defect, but causes a temperature-dependent reduction of in vitro endonuclease activity. Pre-tRNAs do not accumulate in sen2-1 strains. The in vitro enzyme activities of sen1-1 and sen2-1 complement in extracts from a heterozygous diploid, but fail to complement in mixed extracts from separate sen1-1 and sen2-1 haploid strains. These results suggest a direct role for SEN gene products in the enzymatic removal of introns from tRNA that is distinct from the role of other products known to affect tRNA splicing.
Dates
Type | When |
---|---|
Created | 4 years, 7 months ago (Jan. 6, 2021, 12:47 p.m.) |
Deposited | 4 years, 4 months ago (April 22, 2021, 2:30 p.m.) |
Indexed | 1 month, 2 weeks ago (July 14, 2025, 11:27 p.m.) |
Issued | 37 years, 5 months ago (April 1, 1988) |
Published | 37 years, 5 months ago (April 1, 1988) |
Published Online | 37 years, 5 months ago (April 1, 1988) |
Published Print | 37 years, 5 months ago (April 1, 1988) |
@article{Winey_1988, title={Mutations affecting the tRNA-splicing endonuclease activity of Saccharomyces cerevisiae.}, volume={118}, ISSN={1943-2631}, url={http://dx.doi.org/10.1093/genetics/118.4.609}, DOI={10.1093/genetics/118.4.609}, number={4}, journal={Genetics}, publisher={Oxford University Press (OUP)}, author={Winey, M and Culbertson, M R}, year={1988}, month=apr, pages={609–617} }