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The PsbS protein controls the macro-organisation of photosystem II complexes in the grana membranes of higher plant chloroplasts
- Source :
- FEBS Letters, 584(4), 759-764. Wiley
- Publication Year :
- 2010
-
Abstract
- The PsbS protein is a critical component in the regulation of non-photochemical quenching (NPQ) in higher plant photosynthesis. Electron microscopy and image analysis of grana membrane fragments from wild type and mutant Arabidopsis plants showed that the semi-crystalline domains of photosystem II supercomplexes were identical in the presence and absence of PsbS. However, the frequency of the domains containing crystalline arrays was increased in the absence of PsbS. Conversely, there was a complete absence of such arrays in the membranes of plants containing elevated amounts of this protein. It is proposed that PsbS controls the macro-organisation of the grana membrane, providing an explanation of its role in NPQ. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
- Subjects :
- Chloroplasts
Light
Photosystem II
PH-DEPENDENT DISSIPATION
GREEN PLANTS
Arabidopsis
Light-Harvesting Protein Complexes
Biophysics
RHODOBACTER-SPHAEROIDES
Biology
EXCITATION-ENERGY
Photosynthesis
PHOTOPROTECTIVE ENERGY-DISSIPATION
Thylakoids
Biochemistry
Thylakoid membrane
Light-harvesting complex
Photosystem II supercomplex
Rhodobacter sphaeroides
Structural Biology
Genetics
THYLAKOID MEMBRANES
ANTENNA
Molecular Biology
Arabidopsis Proteins
Non-photochemical quenching
PsbS
LIGHT-HARVESTING COMPLEXES
Photosystem II Protein Complex
food and beverages
Cell Biology
IN-VITRO
biology.organism_classification
Chloroplast
Microscopy, Electron
Membrane
Thylakoid
Mutation
Crystallization
PHOTOSYNTHETIC MEMBRANES
Subjects
Details
- Language :
- English
- ISSN :
- 00145793
- Volume :
- 584
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- FEBS Letters
- Accession number :
- edsair.doi.dedup.....397b5be2b689f20987c53c41244b5976