label: protochlorophyllide a + 4 reduced [2Fe-2S]-[ferredoxin] + 2 O2 + 5 H(+) = protochlorophyllide b + 4 oxidized [2Fe-2S]-[ferredoxin] + 3 H2O
label_lc: protochlorophyllide a + 4 reduced [2fe-2s]-[ferredoxin] + 2 o2 + 5 h(+) = protochlorophyllide b + 4 oxidized [2fe-2s]-[ferredoxin] + 3 h2o