Properties of the Photoactive Chlorophyll-aII in Photosynthesis
Open Access
- 1 September 1969
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 24 (9) , 1139-1143
- https://doi.org/10.1515/znb-1969-0911
Abstract
1. The complete difference spectrum of the reaction of the photoactive chlorophyll-an is presented. 2. The reaction of excited chlorophyll-aII is of the type of a sensitizer. It is not engaged directly in the electron transfers. This is in contrast to the photoactive chlorophyll-aI which is an electron donor in its excited state. 3. The chlorophyll-aII-reaction can be separated from the overall reaction by heating chloroplasts 5 min at 50°C. 4. Chlorophyll-an is the reaction center of the well-known poison DCMU. 5. Properties of chlorophyll-aII are depicted in Tab. 1. They are compared with those of chlorophyll-aI and the O2-evolution system.Keywords
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