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FTIR Study of TYRD and TYRZ: Hydrogen Bonding Interactions

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Photosynthesis: Mechanisms and Effects

Abstract

The two redox active tyrosines of photosystem II (PS2), TyrD and TyrZ have been studied by FTIR difference spectroscopy. This study aims at a better understanding of the structural factors that explain their specific properties. While TyrD has no obvious role in PS2 photochemistry, TyrZ is an intermediate in the light-induced water oxidation reactions. There are currently two different views on the role of TyrZ: either a pure electron transfer intermediate between P680 and the Mn-cluster, or the species directly involved in electron and proton abstraction from water (1). Infrared spectroscopy is a probe for the structure and interactions of TyrZ and TyrD both in their reduced and radical state. It also probes the structural changes induced by TyrD and TyrZ oxidation and therefore could give hints on the specific role of TyrZ. In this paper we compare the hydrogen bonding interactions formed by TyrZ and TyrD.

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Author information

Authors and Affiliations

  1. CEA-Saclay, Section de Bioénergétique, Bat. 532, 91 191, Gif-sur-Yvette, Cedex, France

    R. Hienerwadel, A. Boussac, J. Breton & C. Berthomieu

  2. Central Research & Development Dpt., E.I. DuPont de Nemours, Co., Wilmington, DE, 19880-0173, USA

    B.-A. Diner

Authors
  1. R. Hienerwadel
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  2. A. Boussac
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  3. J. Breton
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  4. B.-A. Diner
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  5. C. Berthomieu
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Editor information

Editors and Affiliations

  1. Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary

    G. Garab

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© 1998 Springer Science+Business Media Dordrecht

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Hienerwadel, R., Boussac, A., Breton, J., Diner, BA., Berthomieu, C. (1998). FTIR Study of TYRD and TYRZ: Hydrogen Bonding Interactions. In: Garab, G. (eds) Photosynthesis: Mechanisms and Effects. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3953-3_283

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  • DOI: https://doi.org/10.1007/978-94-011-3953-3_283

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-5547-2

  • Online ISBN: 978-94-011-3953-3

  • eBook Packages: Springer Book Archive

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