Abstract
The PsbS protein of photosystem II functions in the regulation of photosynthetic light harvesting. Along with a low thylakoid lumen pH and the presence of de-epoxidized xanthophylls, PsbS is necessary for photoprotective thermal dissipation (qE) of excess absorbed light energy in plants, measured as non-photochemical quenching of chlorophyll fluorescence. What is known about PsbS in relation to the hypothesis that this protein is the site of qE is reviewed here.
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Review
MeSH terms
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Amino Acid Sequence
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Eukaryota
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Hydrogen-Ion Concentration
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Light
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Molecular Sequence Data
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Photosynthesis / physiology*
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Photosynthetic Reaction Center Complex Proteins / chemistry
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Photosynthetic Reaction Center Complex Proteins / physiology*
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Photosystem II Protein Complex / chemistry
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Photosystem II Protein Complex / physiology*
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Plant Proteins / chemistry
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Plant Proteins / physiology*
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Plants
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Thylakoids / chemistry
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Thylakoids / physiology
Substances
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Photosynthetic Reaction Center Complex Proteins
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Photosystem II Protein Complex
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Plant Proteins