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The role of phosphoenolpyruvate in proton/pyruvate cotransport into mesophyll chloroplasts of maize



The role of phosphoenolpyruvate in proton/pyruvate cotransport into mesophyll chloroplasts of maize



Plant & Cell Physiology 36(1): 187-189



Phosphoenolpyruvate (PEP) was transported together with H+ in C-4 mesophyll chloroplasts. Medium alkalization and stromal acidification due to pyruvate uptake into maize mesophyll chloroplasts in the light were partially inhibited by adding PEP. Thus, the H+ taken up by H+/pyruvate cotransport into mesophyll chloroplasts is released together with PEP in vivo.

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