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5v8k
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Homodimeric reaction center of H. modesticaldum== | |
| + | <StructureSection load='5v8k' size='340' side='right' caption='[[5v8k]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5v8k]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Heliobacterium_modesticaldum Heliobacterium modesticaldum] and [http://en.wikipedia.org/wiki/Heliobacterium_modesticaldum_(strain_atcc_51547_/_ice1) Heliobacterium modesticaldum (strain atcc 51547 / ice1)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5V8K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5V8K FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AOH:8(1)-OH-Chlorophyll+aF'>AOH</scene>, <scene name='pdbligand=C4D:4,4-Diaponeurosporene'>C4D</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DGG:1-[GLYCEROLYLPHOSPHONYL]-2-[8-(2-HEXYL-CYCLOPROPYL)-OCTANAL-1-YL]-3-[HEXADECANAL-1-YL]-GLYCEROL'>DGG</scene>, <scene name='pdbligand=GB0:Bacteriochlorophyll+g'>GB0</scene>, <scene name='pdbligand=GBF:Bacteriochlorophyll+g'>GBF</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jb0|1jb0]]</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5v8k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5v8k OCA], [http://pdbe.org/5v8k PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5v8k RCSB], [http://www.ebi.ac.uk/pdbsum/5v8k PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5v8k ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Reaction centers are pigment-protein complexes that drive photosynthesis by converting light into chemical energy. It is believed that they arose once from a homodimeric protein. The symmetry of a homodimer is broken in heterodimeric reaction center structures, such as those reported previously. The 2.2-A resolution X-ray structure of the homodimeric reaction center/photosystem from the phototroph, Heliobacterium modesticaldum, exhibits perfect C2 symmetry. The core polypeptide dimer and two small subunits coordinate 54 (bacterio)chlorophylls and 2 carotenoids that capture and transfer energy to the electron transfer chain at the center, which performs charge separation and consists of 6 (bacterio)chlorophylls and an iron-sulfur cluster; unlike other reaction centers, it lacks a bound quinone. This structure preserves characteristics of the ancestral reaction center, providing insight into evolution of photosynthesis. | ||
| - | + | Structure of a symmetric photosynthetic reaction center-photosystem.,Gisriel C, Sarrou I, Ferlez B, Golbeck JH, Redding KE, Fromme R Science. 2017 Jul 27. pii: eaan5611. doi: 10.1126/science.aan5611. PMID:28751471<ref>PMID:28751471</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 5v8k" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Heliobacterium modesticaldum]] | ||
[[Category: Ferlez, B]] | [[Category: Ferlez, B]] | ||
| + | [[Category: Fromme, R]] | ||
| + | [[Category: Gisriel, C]] | ||
[[Category: Golbeck, J]] | [[Category: Golbeck, J]] | ||
| + | [[Category: Redding, K E]] | ||
[[Category: Sarrou, I]] | [[Category: Sarrou, I]] | ||
| - | [[Category: | + | [[Category: Homodimeric]] |
| - | [[Category: | + | [[Category: Photosynthesis]] |
| - | [[Category: | + | [[Category: Reaction center]] |
Revision as of 03:52, 6 September 2017
Homodimeric reaction center of H. modesticaldum
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