View source for 6zi6


==Ultrafast Structural Response to Charge Redistribution Within a Photosynthetic Reaction Centre - 20 ps structure==
<StructureSection load='6zi6' size='340' side='right'caption='[[6zi6]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6zi6]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Blastochloris_viridis Blastochloris viridis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6ZI6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ZI6 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BPB:BACTERIOPHEOPHYTIN+B'>BPB</scene>, <scene name='pdbligand=DGA:DIACYL+GLYCEROL'>DGA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FME:N-FORMYLMETHIONINE'>FME</scene>, <scene name='pdbligand=HEC:HEME+C'>HEC</scene>, <scene name='pdbligand=HTO:HEPTANE-1,2,3-TRIOL'>HTO</scene>, <scene name='pdbligand=LDA:LAURYL+DIMETHYLAMINE-N-OXIDE'>LDA</scene>, <scene name='pdbligand=MQ7:MENAQUINONE-7'>MQ7</scene>, <scene name='pdbligand=NS5:15-CIS-1,2-DIHYDRONEUROSPORENE'>NS5</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6zi6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zi6 OCA], [https://pdbe.org/6zi6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6zi6 RCSB], [https://www.ebi.ac.uk/pdbsum/6zi6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6zi6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYCR_BLAVI CYCR_BLAVI] The reaction center of purple bacteria contains a tightly bound cytochrome molecule which re-reduces the photo oxidized primary electron donor.<ref>PMID:10736158</ref> 
<div style="background-color:#fffaf0;">
== 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<ref>PMID:33268896</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6zi6" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Blastochloris viridis]]
[[Category: Large Structures]]
[[Category: Baath P]]
[[Category: Braenden G]]
[[Category: Dods R]]
[[Category: Neutze R]]