Nodule phosphoenolpyruvate carboxylase: a review
1988
Deroche, M.E. | Carrayol, E.
Recent data concerning the fixation of CO2 and the functioning of phosphoenolpyruvate (PEP) carboxylase (EC 4.1.1.31) in legume nodules are reviewed. The activities of N2 fixation (acetylene reduction) and PEP carboxylase are correlated. Activities of PEP carboxylase are always higher in nodules than in roots. PEP carboxylase is located in the cytosol of the plant part of the nodules. When nodules are fed with radioactivity appears predominantly in malate and aspartate. The resolution of isoenzymes of PEP carboxylase shows one more band in nodule than in related roots. The role of PEP carboxylase in nodule metabolism is discussed.
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