Structural highlights
5l8r is a 10 chain structure with sequence from Pisum sativum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Method: | X-ray diffraction, Resolution 2.6Å |
| Ligands: | , , , , , , , , , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
E1C9L2_PEA May channel protons produced in the catalytic Mn center of water oxidation into the thylakoid lumen.[ARBA:ARBA00003702] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080]
Publication Abstract from PubMed
Four elaborate membrane complexes carry out the light reaction of oxygenic photosynthesis. Photosystem I (PSI) is one of two large reaction centres responsible for converting light photons into the chemical energy needed to sustain life. In the thylakoid membranes of plants, PSI is found together with its integral light-harvesting antenna, light-harvesting complex I (LHCI), in a membrane supercomplex containing hundreds of light-harvesting pigments. Here, we report the crystal structure of plant PSI-LHCI at 2.6 A resolution. The structure reveals the configuration of PsaK, a core subunit important for state transitions in plants, a conserved network of water molecules surrounding the electron transfer centres and an elaborate structure of lipids bridging PSI and its LHCI antenna. We discuss the implications of the structure for energy transfer and the evolution of PSI.
Structure of the plant photosystem I supercomplex at 2.6 A resolution.,Mazor Y, Borovikova A, Caspy I, Nelson N Nat Plants. 2017 Mar 1;3:17014. doi: 10.1038/nplants.2017.14. PMID:28248295[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Mazor Y, Borovikova A, Caspy I, Nelson N. Structure of the plant photosystem I supercomplex at 2.6 A resolution. Nat Plants. 2017 Mar 1;3:17014. doi: 10.1038/nplants.2017.14. PMID:28248295 doi:http://dx.doi.org/10.1038/nplants.2017.14
