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. 2020 Sep 8;9(9):1157. doi: 10.3390/plants9091157

Figure 6.

Figure 6

Reaction mechanism of the aerobic cyclase reaction. The cyclase reaction is a six-electron redox reaction suggested to proceed via β-hydroxy and β-keto intermediates. We showed that the electrons are provided by Fd. In the present study, we used NADPH as the source of electrons transferred to Fd via FNR. In green tissue, Fd can also be reduced by photosystem I.