Molecular Mechanisms of Proton-coupled Electron Transfer and Water Oxidation in Photosystem II

  • Shin Nakamura

Part of the Springer Theses book series (Springer Theses)

Table of contents

About this book


The book reviews photosynthetic water oxidation and proton-coupled electron transfer in photosystem, focusing on the molecular vibrations of amino acid residues and water molecules. Photosynthetic water oxidation performed by plants and cyanobacteria is essential for the sustenance of life on Earth, not only as an electron source for synthesizing sugars from CO2, but also as an O2 source in the atmosphere. Water oxidation takes place at the Mn4CaO5cluster in photosystem II, where a series of electron transfer reactions coupled with proton transfer occur using light energy. The author addresses the unresolved mechanisms of photosynthetic water oxidation and relevant proton-coupled electron transfer reactions using a combined approach of experimental and computational methods such as Fourier transform infrared difference spectroscopy and quantum chemical calculations. The results show that protonation and hydrogen-bond structures of water molecules and amino acid residues in the protein play important roles in regulation of the electron and proton transfer reactions. These findings and the methodology make a significant contribution to our understanding the molecular mechanism of photosynthetic water oxidation.


Photosynthetic Water Oxidation in PSII Proton Release Reaction in PSII Electron Transfer in PSII Light-Induced Fourier Transform Infrared Difference Spectroscopy Hybrid QM/MM Approach DFT and QM/MM Approach Normal Mode Analysis Using QM/MM Calculations Grotthuss Mechanism Asymmetric Electron Transfer of Redox-Active Tyrosines Proton-coupled Electron Transfer of Redox-Active Tyrosines

Authors and affiliations

  • Shin Nakamura
    • 1
  1. 1.Department of Biochemical Sciences “A. Rossi Fanelli”University of Rome “Sapienza”RomeItaly

Bibliographic information

  • DOI
  • Copyright Information Springer Nature Singapore Pte Ltd. 2020
  • Publisher Name Springer, Singapore
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-981-15-1583-5
  • Online ISBN 978-981-15-1584-2
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
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