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. 1984 Jul;161(5):394-7.
doi: 10.1007/BF00394568.

Stimulation of ATPase activity by auxin is dependent on ATP concentration

G F Scherer  1
Affiliations

Stimulation of ATPase activity by auxin is dependent on ATP concentration

G F Scherer. Planta. 1984 Jul.

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.

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