P750 Sensitized photooxidations in Anacystis nidulans |
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| Authors: | Hammans JW Kleinen |
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| Institution: | Physics Laboratory, Department of Biophysics, State University P. O. Box 80,000, 3508 TA Utrecht, The Netherlands |
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| Abstract: | Endogenous reductants in Anacystis are photooxidized in a P750-sensitizedreaction. These reductants do not serve as electron donors tophotosystem I, nor are they oxidized in simpler chlorophyll-sensitizedreactions. There are indications that excitation of both P750and chlorophyll causes formation of singlet oxygen, but thatchlorophyll-sensitized oxidations via the 102 mechanism areinhibited in Anacystis by the quenching effect of ß-carotene. (Received April 13, 1978; ) |
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