J. Biochem, 1995, Vol. 118, No. 3 607-613
© 1995 Japanese Biochemical Society
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Three ATP1 Genes Are Present on Chromosome II in Saccharomyces cerevisiae
Department of Applied Microbial Technolog, Kummoto Institute of Technology Kumamoto, Kumamoto 860
1 To whom correspondence should be addressed. E-mail: takeda{at}kumamoto-it.ac.jp
Chromosome fragmentation, ATP1 disruption, and Southern blot analyses of total DNAs and prime clones of chromosome ll showed that three identical ATPls are present, directing from the telomere to the centromere on the 36-55 kb far from the left telomere sequence of chromosome ll. That is, the coding and 5-, 3-non-coding regions of ATP1 are repeated 3 times at approximately 7 kb intervals. These three ATP1 are expressed, and one and two ATPls-disrupted strains respectively, showed ca. 70 and 40% decreases in their ATPase activites and a aubunit contents, compared to those of the wild-type, DC-5 or W303-1A strain, but could grow on glycerol.
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