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PMID:10974568
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Ladrière, JM, Georis, I, Guérineau, M and Vandenhaute, J (2000) Kluyveromyces marxianus exhibits an ancestral Saccharomyces cerevisiae genome organization downstream of ADH2.Gene 255:83-91
| Abstract | In Saccharomyces cerevisiae, the alcohol dehydrogenase genes ADH1 and ADH5 are part of a duplicated block of genome, thought to originate from a genome-wide duplication posterior to the divergence from the Kluyveromyces lineage. We report here the characterization of Kluyveromyces marxianus ADH2 and the five genes found in its immediate downstream region, MRPS9, YOL087C, RPB5, RIB7 and SPP381. The order of these six genes reflects the structure of the ancestral S. cerevisiae genome before the duplication that formed the blocks including ADH1 on chromosome XV and ADH5 on chromosome II, indicating these ADH genes share a direct ancestor. On the one hand, the two genes found immediately downstream of KmADH2 are located, for the first, downstream ADH5 and, for the second, downstream ADH1 in S. cerevisiae. On the other hand, the order of the paralogs included in the blocks of ADH1 and ADH5 in S. cerevisiae suggests that two of them have been inverted within one block after its formation, and that inversion is confirmed by the gene order observed in K. marxianus. |
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