ELECTRONICALLY EXCITED STATES IN MICROSOMAL MEMBRANES: USE OF CHLOROPHYLL-a AS AN INDICATOR OF TRIPLET CARBONYLS |
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| Authors: | Enrique Cadenas Helmut Siesi Ana Campa Giuseppe Cilento |
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| Affiliation: | Institut für Physiologische Chemie I, Universität Düsseldorf, Moorenstr. 5, D–4000 Dusseldorf W. Germany;Department of Biochemistry, Instituto de Quimica, Universidade de Sao Paulo, Caixa Postal 20780, Sao Paulo, Brazil |
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| Abstract: | Abstract —Chlorophyll- a enhances the photoemission from the microsomeltert-butyl hydroperoxide system without affecting the rates of O2 uptake and lipid peroxidation. This photoemission, due to energy transfer from triplet carbonyls to microsome-bound chlorophyll- a , shows that microsomal membranes produce a significant amount of excited triplet carbonyls during lipid peroxidation. |
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