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Title of Journal: Photosynth Res

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Abbravation: Photosynthesis Research

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Springer Netherlands

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DOI

10.1002/art.30638

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1573-5079

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Htransfers in Photosystem II what can we learn f

Authors: Sam Hay Nigel S Scrutton
Publish Date: 2008/09/03
Volume: 98, Issue: 1-3, Pages: 169-
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Abstract

Over the last 10 years studies of enzyme systems have demonstrated that in many cases Htransfers occur by a quantum mechanical tunneling mechanism analogous to longrange electron transfer Htransfer reactions can be described by an extension of Marcus theory and by substituting hydrogen with deuterium or even tritium it is possible to explore this theory in new ways by employing kinetic isotope effects Because hydrogen has a relatively short deBroglie wavelength Htransfers are controlled by the width of the reaction barrier By coupling protein dynamics to the reaction coordinate enzymes have the potential ability to facilitate more efficient Htunneling by modulating barrier properties In this review we describe recent advances in both experimental and theoretical studies of enzymatic Htransfer in particular the role of protein dynamics or promoting motions We then discuss possible consequences with regard to tyrosine oxidation/reduction kinetics in Photosystem II

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Other Papers In This Journal:
  1. Adaptation of photosystem II to high and low light in wild-type and triazine-resistant Canola plants: analysis by a fluorescence induction algorithm
  2. Significance of molecular crowding in grana membranes of higher plants for light harvesting by photosystem II
  3. Structures and functions of the extrinsic proteins of photosystem II from different species
  4. Crassulacean acid metabolism (CAM) in an epiphytic ant-plant, Myrmecodia beccarii Hook.f. (Rubiaceae)
  5. The diversity and complexity of the cyanobacterial thioredoxin systems
  6. Reconstituted CP29: multicomponent fluorescence decay from an optically homogeneous sample
  7. A photoacoustic method for rapid assessment of temperature effects on photosynthesis
  8. Photosynthesis-related quantities for education and modeling
  9. Temperature responses of the Rubisco maximum carboxylase activity across domains of life: phylogenetic signals, trade-offs, and importance for carbon gain
  10. Molecular signatures for the main phyla of photosynthetic bacteria and their subgroups
  11. Optimization of photosynthesis by multiple metabolic pathways involving interorganelle interactions: resource sharing and ROS maintenance as the bases
  12. Production of reactive oxygen species in decoupled, Ca 2+ -depleted PSII and their use in assigning a function to chloride on both sides of PSII
  13. Tracking the molecular evolution of photosynthesis through characterization of atomic contents of the photosynthetic units
  14. What governs the reaction center excitation wavelength of photosystems I and II?
  15. Fluorescence spectroscopy of reconstituted peridinin–chlorophyll–protein complexes
  16. Wide-field photon counting fluorescence lifetime imaging microscopy: application to photosynthesizing systems
  17. Photosynthetic carbon acquisition in Sargassum henslowianum (Fucales, Phaeophyta), with special reference to the comparison between the vegetative and reproductive tissues
  18. Photosynthesis Web resources
  19. Thioredoxin: an unexpected meeting place
  20. Michael Cusanovich: a man of many talents and interests
  21. Phylogeny and taxonomy of Chlorobiaceae
  22. The biological and geological contingencies for the rise of oxygen on Earth
  23. The photoenzymatic cycle of NADPH: protochlorophyllide oxidoreductase in primary bean leaves ( Phaseolus vulgaris ) during the first days of photoperiodic growth
  24. Carbon allocation and element composition in four Chlamydomonas mutants defective in genes related to the CO 2 concentrating mechanism
  25. Comparison of oligomeric states and polypeptide compositions of fucoxanthin chlorophyll a / c -binding protein complexes among various diatom species
  26. Iron–sulfur cluster biosynthesis in photosynthetic organisms
  27. A chloroplast pump model for the CO 2 concentrating mechanism in the diatom Phaeodactylum tricornutum
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