Proton-transport activity, sidedness, and morphometry of tonoplast and plasma-membrane vesicles purified by free-flow electrophoresis from roots of Lepidium sativum L. and hypocotyls of Cucurbita L.
Scherer GFE, vom Dorp B, Schöllmann C, Volkmann D
Planta 186, 483-494 (1992)