Photosynthetic bacterial reaction centres

2020 ◽  
pp. 125-160
Author(s):  
William W. Parson
Keyword(s):  
Reaction Centres

Variable stoichiometries of photosystem II to photosystem I reaction centres

1988 ◽  
Vol 17 (3) ◽  
pp. 277-281 ◽  
Author(s):  
W. S. Chow ◽  
Jan M. Anderson ◽  
A. B. Hope
Keyword(s):  
Photosystem Ii ◽  
Photosystem I ◽  
Reaction Centres

scholarly journals Photo-CIDNP 13C Magic Angle Spinning NMR on Bacterial Reaction Centres: Exploring the Electronic Structure of the Special Pair and Its Surroundings

2001 ◽  
Vol 382 (8) ◽  
pp. 1271-1276 ◽  
Author(s):  
Jörg Matysik ◽  
Els Schulten ◽  
Alia Alia ◽  
Peter Gast ◽  
Jan Raap ◽  
...  
Keyword(s):  
Imidazole Ring ◽  
Magic Angle Spinning ◽  
Continuous Illumination ◽  
Magic Angle ◽  
Aromatic Rings ◽  
Special Pair ◽  
Reaction Centres ◽  
Angle Spinning ◽  
Nmr Signals ◽  
Electronic Ground

Abstract Photochemically induced dynamic nuclear polarisation (photoCIDNP) in intact bacterial reaction centres has been observed by 13Csolid state NMR under continuous illumination with white light. Strong intensity enhancement of 13C NMR signals of the aromatic rings allows probing the electronic ground state of the two BChl cofactors of the special pair at the molecular scale with atomic selectivity. Differences between the two BChl cofactors are discussed. Several aliphatic 13C atoms of cofactors, as well as 13C atoms of the imidazole ring of histidine residue(s), show nuclearspin polarisation to the same extent as the aromatic nuclei of the cofactors. Mechanisms and applications of polarisation transfer are discussed.

Sign in / Sign up

Export Citation Format

Share Document