生长素刺激 ATP 酶活性依赖于 ATP 浓度。
Stimulation of ATPase activity by auxin is dependent on ATP concentration.
机构信息
Botanisches Institut der Universität, Venusbergweg 22, D-5300, Bonn, Federal Republic of Germany.
出版信息
Planta. 1984 Jul;161(5):394-7. doi: 10.1007/BF00394568.
PMID:24253837
Abstract
The effect of auxin on membrane-bound ATPase activity was studied in a plasma membrane-enriched fraction from zucchini hypocotyls. The apparent KM of ATPase activity for ATP was decreased in the presence of 10(-6) M auxin so that at very low ATP concentrations the stimulation of ATPase activity was most obvious. The weak auxin analogue, 2,3-dichlorophenoxyacetic acid, stimulated much less than the active auxin 2,4-dichlorophenoxyacetic acid.
摘要
研究了生长素对南瓜下胚轴质膜富含部分膜结合 ATP 酶活性的影响。在 10（-6）M 生长素存在的情况下，ATP 酶活性对 ATP 的表观 KM 降低，以至于在非常低的 ATP 浓度下，ATP 酶活性的刺激最为明显。弱生长素类似物 2,3-二氯苯氧乙酸的刺激作用远小于活性生长素 2,4-二氯苯氧乙酸。
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