Abstract
We have probed the absorption changes due to an externally applied electric field (Stark effect) of Photosystem I (PSI) core complexes from the cyanobacteria Synechocystis sp. PCC 6803, Synechococcus elongatus and Spirulina platensis. The results reveal that the so-called C719 chlorophylls in S. elongatus and S. platensis are characterized by very large polarizability differences between the ground and electronically excited states (with Tr(Δα) values up to about 1000 Å
Original language | English |
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Pages (from-to) | 180-191 |
Journal | Biochimica et Biophysica Acta (BBA) - Bioenergetics |
Volume | 1554 |
DOIs | |
Publication status | Published - 2002 |