McDonald J F, Anderson S M, Santos M
Genetics. 1980 Aug;95(4):1013-22. doi: 10.1093/genetics/95.4.1013.
An analysis of the molecular properties of the major alcohol dehydrogenase (E.C.1.1.1.1.) allozyme variants found segregating in natural populations of D. melanogaster is presented. Our results indicate: (1) ADH-S enzyme has generally lower Michaelis-Menten constants than those of ADH-F; (2) ADH-S and ADH-F enzymes display opposite interactions for both co-factor and substrate; and (3) higher levels of ADH are associated with the Adh-fast genotype. The possible adaptive significance of these findings is discussed.
本文对在黑腹果蝇自然种群中发现的主要乙醇脱氢酶(E.C.1.1.1.1.)同工酶变体的分子特性进行了分析。我们的结果表明:(1)ADH-S酶的米氏常数通常比ADH-F酶的低;(2)ADH-S和ADH-F酶对辅因子和底物均表现出相反的相互作用;(3)较高水平的ADH与Adh-fast基因型相关。本文还讨论了这些发现可能具有的适应性意义。