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The Lhcb protein and xanthophyll composition of the light harvesting antenna controls the DeltapH-dependency of non-photochemical quenching in Arabidopsis thaliana.

FEBS letters - 30 Apr 2008

Pérez-Bueno Maria L, Johnson Matthew P, Zia Ahmad, Ruban Alexander V, Horton Peter

Abstract excerpt

Nonphotochemical quenching (NPQ) is the photoprotective dissipation of energy in photosynthetic membranes. The hypothesis that the DeltapH-dependent component of NPQ (qE) component of non-photochemical quenching is controlled allosterically by the xanthophyll cycle has been tested using Arabidopsis mutants with different xanthophyll content and composition of Lhcb proteins. The titration curves of qE against...

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Allosteric Regulation
Light
Light-Harvesting Protein Complexes
Photochemistry
Photosynthesis

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PMID: 18396161
DOI: 10.1016/j.febslet.2008.03.040

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