Electrogenicity, H*-ATPase

The vacuoles in higher plants are essential for the maintenance and regulation of the homeostatic environment of the cells [1]. The vacuolar membranes of plant cells contains an electrogenic H -ATPase which provides the proton-motive force for the active transport of solutes across the vacuolar membranes. The activities of certain membrane-bound enzymes are lost by the removal of constituted lipids, but are restored after the addition of exogenous phospholipids [2,3]. Kasamo [4] showed that the various molecular species of PC activated to different extents the H -ATPase solubilized from the plasma membrane of rice cultured cells. 

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