ferredoxin

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ferredoxin A protein containing iron associated with sulphur that is a carrier molecule in the electron transport chain in photosynthesis. It accepts electrons from photosystem I and passes them on to NADP reductase, which donates them for the reduction of NADP+ (see photophosphorylation; photosystems I and II). Ferredoxin also takes part in nitrogen fixation in plants.

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