6ZI9
Ultrafast Structural Response to Charge Redistribution Within a Photosynthetic Reaction Centre - 300 ps (b) structure
Summary for 6ZI9
| Entry DOI | 10.2210/pdb6zi9/pdb |
| Related | 6ZHW |
| Descriptor | Photosynthetic reaction center cytochrome c subunit, BACTERIOCHLOROPHYLL B, BACTERIOPHEOPHYTIN B, ... (15 entities in total) |
| Functional Keywords | electron transport photosynthesis membrane protein, electron transport |
| Biological source | Blastochloris viridis More |
| Total number of polymer chains | 4 |
| Total formula weight | 145658.03 |
| Authors | Baath, P.,Dods, R.,Braenden, G.,Neutze, R. (deposition date: 2020-06-25, release date: 2020-12-09, Last modification date: 2024-11-20) |
| Primary citation | Dods, R.,Bath, P.,Morozov, D.,Gagner, V.A.,Arnlund, D.,Luk, H.L.,Kubel, J.,Maj, M.,Vallejos, A.,Wickstrand, C.,Bosman, R.,Beyerlein, K.R.,Nelson, G.,Liang, M.,Milathianaki, D.,Robinson, J.,Harimoorthy, R.,Berntsen, P.,Malmerberg, E.,Johansson, L.,Andersson, R.,Carbajo, S.,Claesson, E.,Conrad, C.E.,Dahl, P.,Hammarin, G.,Hunter, M.S.,Li, C.,Lisova, S.,Royant, A.,Safari, C.,Sharma, A.,Williams, G.J.,Yefanov, O.,Westenhoff, S.,Davidsson, J.,DePonte, D.P.,Boutet, S.,Barty, A.,Katona, G.,Groenhof, G.,Branden, G.,Neutze, R. Ultrafast structural changes within a photosynthetic reaction centre. Nature, 589:310-314, 2021 Cited by PubMed Abstract: Photosynthetic reaction centres harvest the energy content of sunlight by transporting electrons across an energy-transducing biological membrane. Here we use time-resolved serial femtosecond crystallography using an X-ray free-electron laser to observe light-induced structural changes in the photosynthetic reaction centre of Blastochloris viridis on a timescale of picoseconds. Structural perturbations first occur at the special pair of chlorophyll molecules of the photosynthetic reaction centre that are photo-oxidized by light. Electron transfer to the menaquinone acceptor on the opposite side of the membrane induces a movement of this cofactor together with lower amplitude protein rearrangements. These observations reveal how proteins use conformational dynamics to stabilize the charge-separation steps of electron-transfer reactions. PubMed: 33268896DOI: 10.1038/s41586-020-3000-7 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.8 Å) |
Structure validation
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