Biosynthesis of chlorophyll b and the chlorophyll cycle.
Recent progress in the knowledge of chlorophyll b biosynthesis from chlorophyllide a and reduction of chlorophyll b to chlorophyll a is described. The minireview includes a description of the enzymes involved in these reactions and, where appropriate, of the genes encoding these enzymes. The possible physiological role of the mutual transformation of chlorophylls a and b (chlorophyll cycle) and the evolution of chlorophyll b formation are discussed.
Rüdiger
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Botanisches Institut, Universität München, Menzingerstr. 67, 86038, München, Germany, ruediger@botanik.biologie.uni-muenchen.de.