steps in the process are an initial enzymic formation in the dark of a photoactive complex , p638/652 ( probably a ternary protochlorophyllide-nadph-enzyme complex ) , followed by a very rapid light-dependent hydrogen transfer from the nadph to the protochlorophyllide giving chlorophyllide giving chlorophyllide , finally releasing the enzyme for repeating the process .
C0026741
enzyme complex
C0014442
enzyme