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Photosystem I photochemistry: A new kinetic phase at low temperature

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Abstract

A new phase of charge recombination between the oxidized primary electron donor of photosystem I (P700+) and a reduced acceptor has been detected by flash absorption spectroscopy in PS I particles at low temperature. It occurs under highly reducing conditions (the secondary electron acceptors FA and FB and one or possibly two ‘more primary’ acceptors being prereduced) with a t1/2 of about 20 μs between 10 and 80 K.

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Authors and Affiliations

  1. Service de Biophysique, Département de Biologie, Centre d'études Nucléaires de Saclay, 91191, Gif-sur-Yvette, Cedex, France

    Pierre Setif & Paul Mathis

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  1. Pierre Setif
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  2. Paul Mathis
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Dedicated to Prof. L.N.M. Duysens on the occasion of his retirement.

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Setif, P., Mathis, P. Photosystem I photochemistry: A new kinetic phase at low temperature. Photosynth Res 9, 47–54 (1986). https://doi.org/10.1007/BF00029730

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  • DOI: https://doi.org/10.1007/BF00029730

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