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The stereospecific interaction between chlorophylls and chlorophyllase. Possible implication for chlorophyll
L Fiedor1, V Rosenbach-Belkin, A Scherz
1Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel.
The Journal of Biological Chemistry
|November 5, 1992
Abstract:
Chlorophyllase-catalyzed hydrolysis and esterification of chlorophylls, bacteriochlorophylls, and their free acids, respectively, depend on the configuration around the C-13(2) atom of the corresponding substrate. The data suggest that the enzyme interacts preferentially with compounds having the isocyclic carbomethoxy and the C-17 propionic residues facing opposite sides of the porphyrin macrocycle. The relevance of this observation to chlorophyll biosynthesis and degradation in vivo is briefly discussed.