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A theoretical investigation of the photophysical consequences of major plant light-harvesting complex aggregation within the photosynthetic membrane.

Abstract:

Spectroscopic measurements of Arabidopsis leaves have shown that the energy-dependent component of non-photochemical quenching (NPQ), known as qE, is associated with an absorption change at 535 nm (ΔA(535)). Identical measurements on the zeaxanthin-deficient mutant npq1 reveal a similar spectroscopic signature at 525 nm (ΔA(525)). We investigated whether these red-shifts may arise from excitonic interactions among homodimers of xanthophylls, zeaxanthin, and violaxanthin, bound at the peripher...

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Publication status:
Published

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Publisher copy:
10.1021/jp106234e

Authors


Johnson, MP More by this author
Macernis, M More by this author
Valkunas, L More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
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Journal:
The journal of physical chemistry. B
Volume:
114
Issue:
46
Pages:
15244-15253
Publication date:
2010-11-05
DOI:
EISSN:
1520-5207
ISSN:
1520-6106
URN:
uuid:e1d24cf9-6610-4773-ad85-ec1d6e0a6df6
Source identifiers:
90800
Local pid:
pubs:90800

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