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INTRODUCTION 342 IN VIVO ACTIVATION STUDIES 342 STUDIES WITH INTACT CHLOROPLASTS 344 Light-Dependent Enzyme Activation 344 Effects of Inhibitors 346 Light-Induced Change in Stromal pH 348 Light-Induced Change in Stromal M� Concentration 348 STUDIES WITH ENZYME SYSTEMS 350 Mechanisms of Light Activation 350 Effector-mediated mechanisms 350 lon-mediated mechanisms 353 Protein-mediated mechanisms 353 Mechanisms of Deactivation in the Dark 358 DEVELOPMENTAL ASPECTS 359 ACTIVATION OF MEMBRANOUS ENZYMES 360 OXIDANT·LINKED ACTIVATION 361
Bob B. Buchanan (Sun,) studied this question.