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- W1992045109 abstract "Maize mesophyll chloroplasts loaded with radioactively labeled 3-phosphoglycerate or phosphoenolpyruvate exchange these compounds for externally provided inorganic phosphate, 3-phosphoglycerate, phosphoenolpyruvate, and dihydroxyacetone phosphate. These exchanges are inhibited by pyridoxal phosphate. 3-Phosphoglycerate uptake, which leads to accumulation of this substance in the stroma, is competitively inhibited by inorganic phosphate and phosphoenolpyruvate. These results are consistent with the transport of 3-phosphoglycerate, phosphoenolpyruvate, inorganic phosphate, and dihydroxyacetone phosphate being mediated by a common carrier (the phosphate translocator). The activation energy of 3-phosphoglycerate uptake as determined from its temperature dependence is 19.5 kcal (4–15 °C). In isolated chloroplasts malate and phosphoenolpyruvate production from oxalacetate and pyruvate, respectively, is inhibited by 3-phosphoglycerate, the extent of inhibition being dependent on the relative concentrations of inorganic phosphate and 3-phosphoglycerate. We propose that 3-phosphoglycerate from bundle-sheath cells may serve as a feedback regulator of mesophyll cell photosynthesis." @default.
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- W1992045109 date "1981-10-01" @default.
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- W1992045109 title "Transport of 3-phosphoglyceric acid, phosphoenolpyruvate, and inorganic phosphate in maize mesophyll chloroplasts, and the effect of 3-phosphoglyceric acid on malate and phosphoenolpyruvate production" @default.
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- W1992045109 doi "https://doi.org/10.1016/0003-9861(81)90511-7" @default.
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