[Energy migration in a pigmented protochlorophyllide complex]

Data are analysed concerning energy migration between protochlorophyllide and chlorophyllide formed in etiolated leaves. It is found that phototransformation of the precursor proceeds in the pigment complexes similar to the multicentric photosynthetic unit. The complexes comprise no more than 26 molecules of the active form of protochlorophyllide P650 and two molecules of minor forms of P628 and P639 on the average with mean intermolecular distances 3 nm.