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P ainting , K.A. & K irsop , B arbara , 1984. A note on the presence of novel DNA species in the spoilage yeasts Zygosaecharomyces bailii and Pichia membranaefaciens. Journal of Applied Bacteriology 56 , 331–336. Two novel covalently closed circular DNA species of 5.4 and 6.0 kilobases were detected in strains of Zygosaecharomyces bailii with a rapid small scale isolation procedure. The 5.4 kb species was found in four strains and both species were found in three strains. A novel, covalently‐closed circular DNA species of 6.9 kb was detected in four of 12 strains of Pichia membranaefaciens . Plasmid DNA (2 μm) (that is CCC DNA of approximately 6 kb in Saccharomyces cerevisiae) was detected in 38 of 40 strains of Sacch. cerevisiae confirming reports of the widespread distribution of this plasmid.
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Painting et al. (1984) studied this question.
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