4XK8
Crystal structure of plant photosystem I-LHCI super-complex at 2.8 angstrom resolution
Summary for 4XK8
| Entry DOI | 10.2210/pdb4xk8/pdb |
| Descriptor | Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I reaction center subunit IX, Photosystem I reaction center subunit X psaK, ... (29 entities in total) |
| Functional Keywords | photosynthesis, photosystem i, plant lhci-psi supercomplex |
| Biological source | Pisum sativum (Garden pea) More |
| Total number of polymer chains | 32 |
| Total formula weight | 1046378.51 |
| Authors | Suga, M.,Qin, X.,Kuang, T.,Shen, J.R. (deposition date: 2015-01-10, release date: 2015-06-10, Last modification date: 2024-11-20) |
| Primary citation | Qin, X.,Suga, M.,Kuang, T.,Shen, J.R. Structural basis for energy transfer pathways in the plant PSI-LHCI supercomplex Science, 348:989-995, 2015 Cited by PubMed Abstract: 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. PubMed: 26023133DOI: 10.1126/science.aab0214 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.8 Å) |
Structure validation
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