Inositol phospholipids activate plasma membrane ATPase in plants

Memon, Abdul Razaque
Chen, Qiuyun
Boss, Wendy F.
Phosphatidylinositol-4-monophosphate and phosphatidylinositol-4,5-bisphosphate increased the activity of the vanadate-sensitive ATPase associated with plasma membranes isolated from both sunflower hypocotyls and carrot suspension culture cells. The response was not due to the metabolism of the polyphosphoinositides since diacylglycerol, inositol-1,4-bisphosphate, inositol-1,4,5-trisphosphate, glycerophosphoinositol monophosphate and glycerophosphoinositol bisphosphate had no effect. These data suggest that activation of the inositol phospholipid kinases could be a critical step in signal transduction in plants.
Biochemical and Biophysical Research Communications


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Citation Formats
A. R. Memon, Q. Chen, and W. F. Boss, “Inositol phospholipids activate plasma membrane ATPase in plants,” Biochemical and Biophysical Research Communications, pp. 1295–1301, 1989, Accessed: 00, 2020. [Online]. Available: