chlorophyllide a + oxidized 2[4Fe-4S]-[ferredoxin] + 2 ADP + 2 phosphate <=> protochlorophyllide a + reduced 2[4Fe-4S]-[ferredoxin] + 2 ATP + 2 H2O
chlorophyllide a + oxidized 2[4fe-4s]-[ferredoxin] + 2 adp + 2 phosphate <=> protochlorophyllide a + reduced 2[4fe-4s]-[ferredoxin] + 2 atp + 2 h2o