Tris-HCl buffer; chloroplastic ferredoxin:NADP(1+) oxidoreductase; ferredoxin; oxygen; (ethylenedinitrilo)tetraacetic acid disodium salt; NADPH; magnesium chloride in methanol T=25°C; rate of oxygen uptake, other semiquinones, ferredoxin absence, pH 7.7, other pH values; Mechanism;

in methanol Rate constant;

in water; acetonitrile Rate constant;