PMID: 374989Jan 11, 1979Paper

Fine structure of the 21S ribosomal RNA region on yeast mitochondrial DNA. III. Physical location of mitochondrial genetic markers and the molecular nature of omega

Molecular & General Genetics : MGG
C Heyting, H H Menke

Abstract

1. We have determined the physical location of mitochondrial genetic markers in the 21S region of yeast mtDNA by genetic analysis of petite mutants whose mtDNA has been physically mapped on the wild-type mtDNA. 2. The order of loci, determined in this study, is in agreement with the order deduced from recombination analysis and coretention analysis except for the position of omega+: we conclude that omega+ is located between C321 (RIB-1) and E514 (RIB-3). 3. The marker E514 (RIB-3) has been localized on a DNA segment of 3800 bp, and the markers E354, E553 and cs23 (RIB-2) on a DNA segment of 1100 base pairs; both these segments overlap the 21S rRNA cistron. The marker C321 (RIB-1) has been localized within a segment of 240 bp which also overlaps the 21S rRNA cistron, and we infer on the basis of indirect evidence that this marker lies within this cistron. 4. In all our rho+ as well as rho- strains there is a one-to-one correlation between the omega+ phenotype, the ability to transmit the omega+ allele and the presence of a mtDNA segment of about 1000 bp long, located between sequences specifying RIB-3 and sequences corresponding to the loci RIB-1 and RIB-2. This segment may be inserted at this same position into omega- mtDNA by...Continue Reading

References

Jan 1, 1976·Medical and Pediatric Oncology·S M WeissmanJ Pan
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Sep 9, 1977·Molecular & General Genetics : MGG·G J Van OmmenP Borst
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Nov 1, 1974·Proceedings of the National Academy of Sciences of the United States of America·P S Perlman, C W Birky

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Citations

Jul 1, 1980·Proceedings of the National Academy of Sciences of the United States of America·H Blanc, B Dujon
Jan 1, 1981·Annals of the New York Academy of Sciences·H R Mahler

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