Variable influence of ferric and cupric ions on Saccharomyces cerevisiae strains used in asymmetric organic synthesis |
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| Authors: | Ricardo De Souza Pereira Nelson Durán |
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| Institution: | (1) Department of Biochemistry, Instituto de Química, Universidade Estadual Paulista (UNESP), CP 355, CEP 14801-970 Araraquara, SP, Brazil;(2) Biological Chemistry Laboratory, Instituto de Química, Universidade Estadual de Campinas, CP 6154 SP, Brazil |
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| Abstract: | Summary Fe (III) and Cu (II) each at 50  M in four commercial strains of Saccharomyces cerevisiae induced an increase of NAD(P)+ reduction in one strain (Turkish), but two others (Chilean and Brazilian), the presence of Fe(III) and/or Cu(II) diminished NAD(P)+ reduction presumably due to free radicais formation inside these living cells. Suprisingly, in the American strain, Fe(III) induced a decrease and Cu (II) an increase of NAD(P)+ reduction. |
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