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Oligomeric enzymes in the C4 pathway of photosynthesis
F E Podesta1, A A Iglesias, C S Andreo
1Centro de Estudios Fotosintéticos y Bioquimicos, Suipacha 531, 2000, Rosario.
Abstract:
This review deals with the factors controlling the aggregation-state of several enzymes involved in C4 photosynthesis, namely phosphoenolpyruvate carboxylase, NAD-and NADP-malic enzyme, NADP-malic dehydrogenase and pyruvate, phosphate dikinase and its regulatory protein. All of these enzymes are oligomeric and have been shown to undergo changes in their quaternary structure in vitro under different conditions. The activity changes linked to variations in aggregation-state are discussed in terms of their putative physiological role in the regulation of C4 metabolism.
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