Comparative kinetic and energetic modelling of phyllosemiquinone oxidation in Photosystem I

Author:

Santabarbara Stefano1234,Zucchelli Giuseppe1234

Affiliation:

1. Istituto di Biofisica

2. Consiglio Nazionale delle Ricerche

3. 20133 Milano

4. Italy

Abstract

The comparison different energetic scenarios proposed for Phyllosemiquinone oxidation in Photosystem I within a unified kinetic and theoretical framework indicates that only a weakly activate or a largely exergonic reaction describe the experimental kinetics.

Publisher

Royal Society of Chemistry (RSC)

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy

Reference57 articles.

1. Modelling of the electron transfer reactions in Photosystem I by electron tunnelling theory: The phylloquinones bound to the PsaA and the PsaB reaction centre subunits of PS I are almost isoenergetic to the iron–sulfur cluster FX

2. F. Rappaport , B. A.Diner and K. E.Redding, in Photosystem I: The Light–Driven Plastocyanin:Ferredoxin Oxidoreductase, ed. J. H. Golbeck, Kluwer Academic Publishers, Dordrecht, 2006, pp. 223–244

3. Protein–cofactor interactions in bioenergetic complexes: The role of the A1A and A1B phylloquinones in Photosystem I

4. K. E. Redding and A.van der Est, in Photosystem I: The Plastocyanin: Ferredoxin Oxidoreductase in Photosynthesis, ed. J. H. Golbeck, Kluwer Academic Publishers, Dordrecht, 2006, pp. 413–437

5. Bidirectional Electron Transfer in the Reaction Centre of Photosystem I

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