May, 2015
Structural basis for energy transfer pathways in the plant PSI-LHCI supercomplex
SCIENCE
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- Volume
- 348
- Number
- 6238
- First page
- 989
- Last page
- 995
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1126/science.aab0214
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
Photosynthesis converts solar energy to chemical energy by means of two large pigment-protein complexes: photosystem I (PSI) and photosystem II (PSII). In higher plants, the PSI core is surrounded by a large light-harvesting complex I (LHCI) that captures sunlight and transfers the excitation energy to the core with extremely high efficiency. We report the structure of PSI-LHCI, a 600-kilodalton membrane protein supercomplex, from Pisum sativum (pea) at a resolution of 2.8 angstroms. The structure reveals the detailed arrangement of pigments and other cofactors-especially within LHCI-as well as numerous specific interactions between the PSI core and LHCI. These results provide a firm structural basis for our understanding on the energy transfer and photoprotection mechanisms within the PSI-LHCI supercomplex.
- Link information
- ID information
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- DOI : 10.1126/science.aab0214
- ISSN : 0036-8075
- eISSN : 1095-9203
- Pubmed ID : 26023133
- Web of Science ID : WOS:000355276600038