Resistance to Cadmium Ions and Formation of a Cadmium-Binding Complex in Various Wild-Type Yeasts |
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| Authors: | Inouhe Masahiro; Sumiyoshi Maho; Tohoyama Hiroshi; Joho Masanori |
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| Institution: | Department of Biology, Faculty of Science, Ehime University Matsuyama, 790 Japan |
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| Abstract: | The resistance to cadmium ions (Cd-resistance) and possibleformation of cadmium-binding complexes were examined in eightdifferent wild-type yeasts. Saccharomyces exiguus, Pichia farinosa,Torulaspora delbrueckii and Schizosaccharomyces octosporus exhibitedpartial Cd-resistance, as compared to the Cd-resistant strain301N and the Cu-resistant but Cd-sensitive strain X2180-1B ofSaccharomyces cerevisiae. Saccharomyces carlsbergensis, Pichiamogii, Zygosaccharomyces rouxii and Kluyveromyces lactis wereall Cd-sensitive. The partially Cd-sensitive species, with theexception of S. exiguus, accumulated Cd2+ ions in the cytoplasmicfraction to varying extents. This fraction from S. octosporusincluded a Cd-binding complex that contained ( |
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