酒精脱氢酶:缺氧条件下同工酶水平的变化

Robert G. Mayne , Peter J. Lea
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引用次数: 18

摘要

酒精脱氢酶(ADH)在8日龄大麦幼苗根和芽中的活性。圣丹斯(Sundance)在洪水期间上涨。这种增加伴随着组织中ADH同工酶的数量和比例的变化。在封闭环境下,离体芽的酶活性也有所升高;放线菌素D不抑制这种增加,环己亚胺仅部分抑制这种增加。根据同工酶的动力学性质,讨论了所观察到的同工酶比例变化的生理意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Alcohol dehydrogenase in Hordeum vulgare: changes in isoenzyme levels under hypoxia

Alcohol dehydrogenase (ADH) activity in roots and shoots of 8-day-old barley seedlings (Hordeum vulgare cv. Sundance) rose in response to periods of flooding. The increase was accompanied by changes in the amounts and proportions of ADH isoenzymes present in the tissues. Enzyme activity in excised shoots also rose in response to enclosed atmospheres; this increase was not inhibited by actinomycin D and only partially restricted by cycloheximide. The physiological significance of the observed changes in isoenzyme proportions is discussed with reference to the kinetic properties of the isoenzymes.

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