Regulatory effects of adenosine diphosphate on the activity of the plasma membrane ATPase of corn roots.

Plasma membrane enriched microsomal fraction was isolated from corn root cells by sucrose density centrifugation. The ATPase activity as measured by the release rate of inorganic phosphate, was decreased by the presence of modifiers which included diethylstilbestrol, vanadate, N,N'-dicyclohexylcarbodiimide, and miconazole. The presence of ADP also decreased… (More)