6zi9

Ultrafast Structural Response to Charge Redistribution Within a Photosynthetic Reaction Centre - 300 ps (b) structure

spinqualitylabelsall models 6zi9, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6zi9 is a 4 chain structure with sequence from Blastochloris viridis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Ligands: BPB, DGA, FE, FME, HEC, HTO, LDA, MQ7, NS5, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RCEH_BLAVI The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis. Publication Abstract from PubMed 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(1) using an X-ray free-electron laser(2) 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. Ultrafast structural changes within a photosynthetic reaction centre.,Dods R, Bath P, Morozov D, Gagner VA, Arnlund D, Luk HL, Kubel J, Maj M, Vallejos A, Wickstrand C, Bosman R, Beyerlein KR, Nelson G, Liang M, Milathianaki D, Robinson J, Harimoorthy R, Berntsen P, Malmerberg E, Johansson L, Andersson R, Carbajo S, Claesson E, Conrad CE, Dahl P, Hammarin G, Hunter MS, Li C, Lisova S, Royant A, Safari C, Sharma A, Williams GJ, Yefanov O, Westenhoff S, Davidsson J, DePonte DP, Boutet S, Barty A, Katona G, Groenhof G, Branden G, Neutze R Nature. 2021 Jan;589(7841):310-314. doi: 10.1038/s41586-020-3000-7. Epub 2020 Dec , 2. PMID:33268896 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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