Reference: Schmidt C, et al. (1987) Nuclear suppression of a mitochondrial RNA splice defect: nucleotide sequence and disruption of the MRS3 gene. Mol Gen Genet 210(1):145-52

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Abstract


A mitochondrial RNA splice defect in the first intron of the COB gene (bI1) can be suppressed by a dominant nuclear mutation SUP-101. Starting with a gene bank of yeast nuclear DNA from a SUP-101 suppressor strain cloned in the YEp13 plasmid, we have isolated a recombinant plasmid which exerts a suppressor activity similar to the SUP-101 allele. The N3(2) insert of this plasmid contains an open reading frame (ORF) of 1014 bp which is transcribed to a 12 S RNA. Deletion of the 5' end of this ORF and its upstream sequences abolishes the suppressor activity. The N3(2) insert thus carries a functional gene (called MRS3) which can suppress a mitochondrial splice defect. The chromosomal equivalent of the cloned gene has been mapped to chromosome 10. Disruption of this chromosomal gene has no phenotypic effect on wild-type cells.

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Journal Article | Research Support, Non-U.S. Gov't
Authors
Schmidt C, Söllner T, Schweyen RJ
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