Open AccessTransient magnetic resonance. Transient spin states in the primary processes of photosynthesis
Author(s) -
Stehli D.,
van der Est A.,
Kamlowski A.
Publication year - 1996
Publication title -
berichte der bunsengesellschaft für physikalische chemie
Language(s) - English
Resource type - Journals
ISSN - 0005-9021
DOI - 10.1002/bbpc.19961001218
Subject(s) - quinone , electron paramagnetic resonance , photosynthesis , chemistry , photosynthetic reaction centre , acceptor , characterization (materials science) , primary (astronomy) , transient (computer programming) , photochemistry , resonance (particle physics) , nuclear magnetic resonance , materials science , stereochemistry , nanotechnology , atomic physics , physics , computer science , biochemistry , astronomy , condensed matter physics , operating system
The role of the first stabilized charge separated state, P +• Q −• , generated in the course of the primary processes in photosynthesis is discussed. In particular, the adaptation of the properties of Q −• to the functional requirements in different types of photosynthetic reaction centers is considered. Time resolved EPR is shown to be very well‐suited for the characterization of P +• Q −• and that important structural and functional properties of the radical pair can be obtained from such data. The most recent spectroscopic information is presented and evaluated with the aim of correlating differences in the observed characteristics of the quinone acceptor with differences in the various types of photosynthetic reaction centers. It is suggested that the nature of the acceptors following the primary quinone (either an exchangeable quinone or a series of iron‐sulfur centers) has a marked influence on the nature of the quinone binding.