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. 1982 May;2(5):571–577. doi: 10.1128/mcb.2.5.571

A suppressor of temperature-sensitive rna mutations that affect mRNA metabolism in Saccharomyces cerevisiae.

N J Pearson, P C Thorburn, J E Haber
PMCID: PMC369827  PMID: 7050675

Abstract

We have isolated a dominant suppressor of rna mutation (SRN1) that relieves the temperature-sensitive inhibition of mRNA synthesis of ribosomal protein genes in the yeast Saccharomyces cerevisiae. The suppressor was selected for its ability to alleviate simultaneously the temperature-sensitive growth phenotypes of rna2 and rna6. Several independently isolated suppressors appeared to be recessive lethal mutations. One suppressor, SRN1, was recovered as viable in haploid strains. SRN1 can suppress rna2, rna3, rna4, rna5, rna6, and rna8 singly or in pairs, although some combinations of rna mutations are less well suppressed than others. The suppressor allows strains with rna mutations to grow at 34 degrees C but is unable to suppress at 37 degrees C; however, SRN1 does not, by itself, prevent growth at 37 degrees C. In addition, SRN1 suppresses the rna1 mutation which affects general mRNA levels and also leads to the accumulation of precursor tRNA for those tRNAs that have intervening sequences. SRN1 can suppress the rna1 mutation as well as the rna1 rna2 double mutation at 34 degrees C. The suppressor does not affect the temperature-sensitive growth of two unrelated temperature-sensitive mutations, cdc4 and cdc7.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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