13C Chemical Shift Map of the Active Cofactors in Photosynthetic Reaction Centers ofRhodobacter sphaeroidesRevealed by Photo-CIDNP MAS NMR†

Biochemistry ◽  
2007 ◽  
Vol 46 (31) ◽  
pp. 8953-8960 ◽  
Author(s):  
Shipra Prakash ◽  
A. Alia ◽  
Peter Gast ◽  
Huub J. M. de Groot ◽  
Gunnar Jeschke ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Reaction Centers ◽  
Mas Nmr ◽  
Photosynthetic Reaction Centers ◽  
Shift Map ◽  
13C Chemical Shift

Magnetic Field Dependence of Photo-CIDNP MAS NMR on Photosynthetic Reaction Centers ofRhodobacter sphaeroidesWT

2005 ◽  
Vol 127 (41) ◽  
pp. 14290-14298 ◽  
Author(s):  
Shipra Prakash ◽  
Alia ◽  
Peter Gast ◽  
Huub J. M. de Groot ◽  
Gunnar Jeschke ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Reaction Centers ◽  
Mas Nmr ◽  
Photosynthetic Reaction Centers

Characterization of Pheophytin Ground States inRhodobacter sphaeroidesR26 Photosynthetic Reaction Centers from Multispin Pheophytin Enrichment and 2-D13C MAS NMR Dipolar Correlation Spectroscopy†

Biochemistry ◽  
1997 ◽  
Vol 36 (24) ◽  
pp. 7513-7519 ◽  
Author(s):  
Tatjana A. Egorova-Zachernyuk ◽  
Barth van Rossum ◽  
Gert-Jan Boender ◽  
Eric Franken ◽  
Jennifer Ashurst ◽  
...  
Keyword(s):  
Ground States ◽  
Reaction Centers ◽  
Correlation Spectroscopy ◽  
Mas Nmr ◽  
Photosynthetic Reaction Centers

scholarly journals Photo-CIDNP in the Reaction Center of the Diatom Cyclotella meneghiniana Observed by 13C MAS NMR

2017 ◽  
Vol 231 (2) ◽  
Author(s):  
Jeremias C. Zill ◽  
Marcel Kansy ◽  
Reimund Goss ◽  
Lisa Köhler ◽  
A. Alia ◽  
...  
Keyword(s):  
Solid State ◽  
Reaction Center ◽  
Radical Pair ◽  
Reaction Centers ◽  
Mas Nmr ◽  
Photosynthetic Reaction Centers ◽  
Functional Information ◽  
13C Mas Nmr ◽  
Sensitivity And Selectivity ◽  
Insight Into

AbstractPhoto-CIDNP MAS NMR presents a unique tool to obtain insight into the photosynthetic reaction centers (RCs) of bacteria and plants. Using the dramatic enhancement of sensitivity and selectivity of the solid-state photo-CIDNP effect, structural as well as functional information can be obtained from the cofactor molecules forming a light-induced spin-correlated radical pair (SCRP) in a given reaction center. Here we demonstrate that the effect can be observed in a further species, which belongs neither to the plant nor the bacteria kingdom.

scholarly journals Excitonic structure and charge separation in the heliobacterial reaction center probed by multispectral multidimensional spectroscopy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yin Song ◽  
Riley Sechrist ◽  
Hoang H. Nguyen ◽  
William Johnson ◽  
Darius Abramavicius ◽  
...  
Keyword(s):  
Reaction Center ◽  
Charge Separation ◽  
Electronic Spectroscopy ◽  
Spectroscopic Studies ◽  
Primary Electron ◽  
Reaction Centers ◽  
Separation Mechanism ◽  
Photosynthetic Reaction Centers ◽  
Density Analysis ◽  
Function Relationship

AbstractPhotochemical reaction centers are the engines that drive photosynthesis. The reaction center from heliobacteria (HbRC) has been proposed to most closely resemble the common ancestor of photosynthetic reaction centers, motivating a detailed understanding of its structure-function relationship. The recent elucidation of the HbRC crystal structure motivates advanced spectroscopic studies of its excitonic structure and charge separation mechanism. We perform multispectral two-dimensional electronic spectroscopy of the HbRC and corresponding numerical simulations, resolving the electronic structure and testing and refining recent excitonic models. Through extensive examination of the kinetic data by lifetime density analysis and global target analysis, we reveal that charge separation proceeds via a single pathway in which the distinct A0 chlorophyll a pigment is the primary electron acceptor. In addition, we find strong delocalization of the charge separation intermediate. Our findings have general implications for the understanding of photosynthetic charge separation mechanisms, and how they might be tuned to achieve different functional goals.

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