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  • Title: The nucleotide sequence of the mitochondrial DNA genome of an abundant petite mutant of Saccharomyces cerevisiae carrying the ori1 replication origin.
    Author: Maxwell RJ, Devenish RJ, Nagley P.
    Journal: Biochem Int; 1986 Jul; 13(1):101-7. PubMed ID: 3019348.
    Abstract:
    We have determined the 903 bp nucleotide sequence of the mitochondrial DNA genome of a Saccharomyces cerevisiae petite mutant BB5. This petite, containing the 265 nucleotide ori1 region, is representative of a class of petites arising at exceptionally high frequency within the population of spontaneous petites derived from a particular mit- strain Mb12. The DNA sequences of both the ori1 region and the flanking intergenic regions have been compared to those of the corresponding regions of mtDNA in a previously reported petite strain, a1/1R/1 of Bernardi's laboratory, that has a similar (880 bp) repeat unit. The BB5 petite genome carries a canonical ori1 sequence that is identical in both petite mtDNAs, but the flanking intergenic sequences show significant differences between the two petite strains. The divergence is considered to arise from differences in the sequences flanking ori1 in the respective parent strains.
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