Abstract
Two recent publications concerning the chloroplast membrane-protein phosphorylation and state transition might lead to further progress in the elucidation of the mechanism and role of this process. A thylakoid-bound protein TSP9 is released to the chloroplast matrix upon redox-dependent stepwise phosphorylation of three threonine sites and might signal redox-dependent gene transcription. The state-transition process and phosphorylation of the light-harvesting complex II require the activity of a novel protein kinase Stt7.
Publication types
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Research Support, Non-U.S. Gov't
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Review
MeSH terms
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Chloroplasts / enzymology
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Gene Expression Regulation, Plant
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Light
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Membrane Proteins / metabolism*
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Oxidation-Reduction
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Phosphorylation
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Photosynthetic Reaction Center Complex Proteins / metabolism
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Plant Proteins / metabolism*
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Protein Serine-Threonine Kinases / chemistry
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Protein Serine-Threonine Kinases / genetics
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Protein Serine-Threonine Kinases / metabolism
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Signal Transduction
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Thylakoids / chemistry*
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Thylakoids / metabolism
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Thylakoids / physiology*
Substances
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Membrane Proteins
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Photosynthetic Reaction Center Complex Proteins
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Plant Proteins
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Protein Serine-Threonine Kinases