Abstract
A model of the photochemical apparatus of photosynthesis, presented previously in a tripartite format, is used in a bipartite format to analyze energy transfer between photosystem II units. The model is used to develop analytical expressions for the photochemical properties of chloroplasts that include a term for the probability for energy transfer between photosystem II units. In particular, a normalized plot of the fluorescence of variable yield as a function of the closure of photosystem II reaction centers permits the evaluation of the energy transfer parameter. Data from a study by Melis [Melis, A. (1978) FEBS Lett. 95, 202-206] are used to estimate that the probability for energy transfer between photosystem II units in the α component of photosystem II was approximately 0.57 when the photosystem II reaction centers were all open and 0.83 when the centers were closed. This connected package model appears to provide a better description of the system than the matrix model that was used previously.
Dates
Type | When |
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Created | 19 years, 2 months ago (May 31, 2006, 4:26 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 11:18 a.m.) |
Indexed | 3 weeks, 3 days ago (Aug. 6, 2025, 8:56 a.m.) |
Issued | 45 years ago (Aug. 1, 1980) |
Published | 45 years ago (Aug. 1, 1980) |
Published Online | 45 years ago (Aug. 1, 1980) |
Published Print | 45 years ago (Aug. 1, 1980) |
@article{Butler_1980, title={Energy transfer between photosystem II units in a connected package model of the photochemical apparatus of photosynthesis}, volume={77}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.77.8.4697}, DOI={10.1073/pnas.77.8.4697}, number={8}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Butler, Warren L.}, year={1980}, month=aug, pages={4697–4701} }