[Transient states in the photoreactions of chlorophyll-protein complexes]

Transient short-lived species arising in chlorophyll-protein complexes of PS I on flash excitation were studied by means of flash-photolysis and luminescence methods. Complexes were isolated from chloroplasts by the solubilisation in SDS and subsequent electrophoresis. Three different types of reactions associated with: a) the triplet state of monomeric chlorophyll; b) redox reactions in reaction centres; c) photochemical reactions of monomeric chlorophyll were established on excitation. The arrangement of different forms of chlorophyll connected with the protein globule is discussed.