| The nitrated group accepts electrons of flavoprotein and ferredoxin in these microorganisms. |
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| During this reaction four electrons are transferred from ferredoxin to produce phycocyanobilin. |
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| It is also an excellent ergogenic dietary supplement for athletes, thanks to its content ferredoxin and biotin. |
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| The principle enzyme, pyruvate ferredoxin oxidoreductase, is present in high concentrations and forms conspicuous crystalline structures inside the hydrogenosome. |
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| The relative amounts of cyclic and noncyclic flow may be adjusted in accordance with changing physiological needs for ATP and reduced ferredoxin and NADPH in chloroplasts. |
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| The reduced ferredoxin is reoxidized by the hydrogenase to form hydrogen. |
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