The Reaction Center of Photosynthetic Bacteria de Maria-Elisabeth Michel-Beyerle

The Reaction Center of Photosynthetic Bacteria: Structure and Dynamics

Maria-Elisabeth Michel-Beyerle

en Limba Engleză Paperback – 30 sep 2011

Results of this third Feldafing Meeting can be considered as the harvest of novel techniques in spectroscopy, biochemistry and molecular biology to the bacterial photosynthetic reaction center. New information pertains to the crystallographic and electronic structure as well as to the dynamics of primary events and the role of the protein. The answer to one long-standing problem, the mechanism of primary charge separation, converges towards a sequential scheme, supported by femtosecond spectroscopy on reaction centers with selectively modified energetics.

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1: Crystallographic and Electronic Structure.- Crystallization and Structure of the Photosynthetic Reaction Centres from Rhodobacter sphaeroides — Wild Type and Mutants.- The Crystal Structure of Allophycocyanin and its Comparison to C-Phycocyanin and b-Phycoerythrin.- New Insights into the X-Ray Structure of the Reaction Center form Rhodopseudomonas viridis.- Effect of Orbital Asymmetry in P·+ on Electron Transfer in Reaction Centers of Rb. sphaeroides.- ENDOR on the Primary Electron Donor Cation Radical of Heterodimer-Double-Mutants of Rb. sphaeroides. Effect of Hydrogen Bonding on the Electronic Structure of Bacteriochlorophyll ?-type Radicals.- Structure Information on the Bacterial Primary Donor P+·, Acceptor $$ Q_A^{{ - \cdot }} $$, and Radical Pair P+·-$$ Q_A^{{ - \cdot }} $$ as Obtained form High-Field EPR/ENDOR and MO Studies.- Molecular Triads that Mimic the Spin-Polarized Triplet State in Photosynthetic Reaction Centers.- Quantum Calculations for the Special Pair Dimer and for Heterodimers: Analysis of the Charge Transfer States.- Macroscopic and Microscopic Estimates of the Energetics of Charge Separation in Bacterial Reaction Centers.- Electron Transfer in Proteins: Beyond the Single Pathway Approach.- The Role of the Protein in the Stabilization of the Charge Separated States in Photosynthetic Reaction Centers.- Shifts of the Special Pair Redox Potential of Mutants of Rhodobactersphaeroides Calculated with DelPhi and CHARMM Energy Functions.- 2: Dynamics of Primary Events and the Role of Protein.- The First Femtoseconds of Primary Photosynthesis — The Processes of the Initial Electron Transfer Reaction.- Femtosecond Kinetics of Special Pair Bleaching and Electron Transfer in Rhodobacter sphaeroides Reaction Centers.- Ultrafast Energy Transfer within the Bacterial Photosynthetic Reaction Centers.- Slow Charge Separation in a Minority of Reaction Centers Correlated with a Blueshift of theP860-Band in Rb. sphaeroides.- Reaction Centers Heterogeneity Probed by Mutlipulse Photoselection Experiments with Picosecond Time Resolution.- Characteristics of the Electron Transfer Reaction in the M21OW Reaction Centre only Mutant of Rhodobacter sphaeroides.- Ultrafast Electron and Excitation Energy Transfer in Modified Photosynthetic Reaction Centers from Rhodobacter sphaeroides.- Pressure Dependence of Energy and Electron Transfer in Photosynthetic Complexes.- Femtosecond Spectroscopy and Vibrational Coherence of Membrane-Bound RCs of Rhodobacter sphaeroides Genetically Modified at Position M210 and L181.- Femtosecond Infrared Spectroscopy on Reaction Centers of Rb. Sphaeroides.- Energetics of the Primary Charge Separation in Bacterial Photosynthesis.- Effects of Static Heterogeneity on the Parallel-Sequential-Superexchange Mechanism for the Primary Charge Separation in Bacterial Photosynthesis.- Structural and Functional Properties of the State P+· Q-· from Transient EPR Spectroscopy.- Light-Induced Changes in Transient EPR Spectra of $$ P_{{865}}^{{ + \cdot }}Q_A^{{ - \cdot }} $$.- Quantum Beats as Probe of the Primary Events in Bacterial Photosynthesis.- Asymmetry of the Binding Sites of $$ Q_A^{{ - \cdot }} $$ and $$ Q_B^{{ - \cdot }} $$ in Reaction Centers of Rb. sphaeroides Probed by Q-Band EPR with 13C-Labeled Quinones.- Alternate Reaction Center Acceptors: Spectral Signatures and Redox Properties of Pheoporphyrin, Zinc and Copper Bacteriochlorin Anion Radicals.- Protein-Quinone Interactions in Photosynthetic Bacterial Reaction Centers Investigated by Light-Induced FTIR Difference Spectroscopy.- FTIR Spectroscopic Characterization of the QA and QB Binding sites in Rhodobacter sphaeroides R26 Reaction Centers.- Site-Directed Isotope Labelling as a Tool in Spectroscopy of Photosynthetic Preparations. Investigations on Quinone Binding in Bacterial Reaction Centers.- Index of Authors.