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Bidirectional electron transfer in photosystem I: determination of two distances between P700+ and A1- in spin-correlated radical pairs.

Abstract:

The spin-correlated radical pair [P(700)(+)A(1)(-)] gives rise to a characteristic "out-of-phase" electron spin-echo signal. The electron spin-echo envelope modulation (ESEEM) of these signals has been studied in thylakoids prepared from the wild-type strain of Chlamydomonas reinhardtii and in two site-directed mutants, in which the methionine residue which acts as the axial ligand to the chlorin electron acceptor A(0) has been substituted with a histidine either on the PsaA (PsaA-M684H) or t...

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Publication status:
Published

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Publisher copy:
10.1021/bi048445d

Authors


Santabarbara, S More by this author
Fairclough, WV More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
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Journal:
Biochemistry
Volume:
44
Issue:
6
Pages:
2119-2128
Publication date:
2005-02-05
DOI:
EISSN:
1520-4995
ISSN:
0006-2960
URN:
uuid:aa11c932-0979-46a0-8e76-6747044b3ca2
Source identifiers:
32985
Local pid:
pubs:32985

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