The final stage of chlorophyll biosynthesis and formation of reaction centres of photosystems.

The survey reviews Russian studies of the final stage of chlorophyll biosynthesis and the role of A. A. Krasnovsky (Sr.) in the development of this direction. The current state of the problem is considered. The results of studies carried out by Krasnovsky's followers at Moscow State University are summarized. Schemes of the pathways of chlorophyll and pheophytin biosynthesis, biogenesis of pigment complexes of the two photosystems of photosynthesis proposed by those scientists are presented.