Trifluoroleucine-resistant mutant of Saccharomyces cerevisiae also exhibits pleiotropic drug resistance

Takahiro Oba, Kosuke Tashiro, Satoru Kuhara

Research output: Contribution to journalArticle


In this study, we revealed that a trifluoroleucine-resistant mutant of Saccharomyces cerevisiae also exhibits pleiotropic drug resistance. DNA microarray analysis of wild-type strain vs. a trifluoroleucine-resistant mutant showed that the PDR5, PDR10, PDR15, and YOR1 genes, encoding the ABC transporter, had high levels of expression. By contrast, the 9 transcriptional factor genes of the ABC transporter, such as PDR1 and PDR3, and the repressor of drug resistance, RDR1, were not up-regulated. When the nucleotide sequences of PDR1 and PDR3 of the wild-type strain and trifluoroleucine-resistant mutant were compared, the sequences of both genes in each strain were identical.

Original languageEnglish
Pages (from-to)293-296
Number of pages4
JournalAnnals of Microbiology
Issue number2
Publication statusPublished - Jan 1 2008


All Science Journal Classification (ASJC) codes

  • Applied Microbiology and Biotechnology

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