| 367361 |
Wills C, Phelps J: Functional mutants of yeast alcohol dehydrogenase affecting kinetics, cellular redox balance, and electrophoretic mobility. Biochem Genet. 1978 Jun;16(5-6):415-32.
Repeated selection of petite (respiratorily incompetent) Saccharomyces cerevisiae on medium containing allyl alcohol, both on plates and in the turbidostat, results in mutants with a remarkably similar response. Most of the mutations affect the constitutive alcohol dehydrogenase, resulting in enzymes with a cathodal shift in electrophoretic mobility, and none shows a significant anodal shift. The genetics, kinetics, and physiological effect of three of the mutants have been investigated in detail, and while all confer resistance to allyl alcohol through a shift in the NAD/NADH ratio, they do so in slightly different ways. The potential of this system for exploring the range of short-term adaptations open to this organism is discussed. |
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