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Reconstruction of the chloroplast noncyclic electron transport pathway from water to nadp with 3 integral protein complexes



Reconstruction of the chloroplast noncyclic electron transport pathway from water to nadp with 3 integral protein complexes



Proceedings of the National Academy of Sciences of the United States of America 79(18): 5494-5498



Reconstruction of photosynthetic noncyclic electron transport from water to NADP was accomplished by using 3 integral protein complexes isolated from [spinach] chloroplast thylakoid membranes, photosystems I and II and the cytochrome b6-f complex. This system has an absolute dependence on the presence of all 3 protein complexes for NADP reduction, in addition to plastocyanin, ferredoxin and ferredoxin-NADP reductase. The reconstructed system was sensitive to low concentrations of known inhibitors of noncyclic electron transport. Depletion of the Rieske Fe center and bound plastoquinone from the cytochrome b6-f complex resulted in an inhibition of the photoreduction of NADP.

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Accession: 006273117

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