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Plant Physiology 95:341-343 (1991)
© 1991 American Society of Plant Biologists

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Metabolism and Enzymology

Diversity of Specificity and Function of Phosphate Translocators in Various Plastids

Hans W. Heldt, Ulf-Ingo Flügge and Sieglinde Borchert

Institut für Biochemie der Pflanze, Universität Göttingen, Untere Karspüle 2, D-3400 Göttingen, Germany, Institut für Botanik und Pharmazeutische Biologie, Universität Würzburg, Mittlerer Dallenbergweg 64, D-8700 Würzburg, Germany

This report gives a comparison of the specificity of phosphate translocators in various plastids. Whereas the phosphate translocator of the C3 plant spinach mediates a counter exchange between inorganic phosphate, dihydroxyacetone phosphate, and 3-phosphoglycerate, the phosphate translocators in chloroplasts from C4 and CAM plants transport phosphoenolpyruvate in addition to the above mentioned metabolites. In plastids from pea roots the phosphate translocator also transports glucose 6-phosphate. This diversity of phosphate translocators is discussed in view of the special functions of the various plastids.




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J. Schleucher, P. J. Vanderveer, and T. D. Sharkey
Export of Carbon from Chloroplasts at Night
Plant Physiology, December 1, 1998; 118(4): 1439 - 1445.
[Abstract] [Full Text]


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Copyright © 1991 by the American Society of Plant Biologists