7c9r: Difference between revisions
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New page: '''Unreleased structure''' The entry 7c9r is ON HOLD until Paper Publication Authors: Description: Category: Unreleased Structures |
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==STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBRIO STRAIN 970== | |||
<StructureSection load='7c9r' size='340' side='right'caption='[[7c9r]], [[Resolution|resolution]] 2.82Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7c9r]] is a 36 chain structure with sequence from [https://en.wikipedia.org/wiki/Thiorhodovibrio_sp._970 Thiorhodovibrio sp. 970]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7C9R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7C9R FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.82Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=8K6:OCTADECANE'>8K6</scene>, <scene name='pdbligand=BPH:BACTERIOPHEOPHYTIN+A'>BPH</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CDL:CARDIOLIPIN'>CDL</scene>, <scene name='pdbligand=DGA:DIACYL+GLYCEROL'>DGA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=H4X:(6~{E},8~{E},10~{E},12~{E},14~{E},16~{E},18~{E},20~{E},22~{E},24~{E},26~{E})-2,31-dimethoxy-2,6,10,14,19,23,27,31-octamethyl-dotriaconta-6,8,10,12,14,16,18,20,22,24,26-undecaene'>H4X</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MQ8:MENAQUINONE+8'>MQ8</scene>, <scene name='pdbligand=PGV:(1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL+(11E)-OCTADEC-11-ENOATE'>PGV</scene>, <scene name='pdbligand=UQ8:UBIQUINONE-8'>UQ8</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=7c9r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7c9r OCA], [https://pdbe.org/7c9r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7c9r RCSB], [https://www.ebi.ac.uk/pdbsum/7c9r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7c9r ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/G1BIY9_9GAMM G1BIY9_9GAMM] Antenna complexes are light-harvesting systems, which transfer the excitation energy to the reaction centers.[ARBA:ARBA00002455] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The light-harvesting-reaction center complex (LH1-RC) from the purple phototrophic bacterium Thiorhodovibrio strain 970 exhibits an LH1 absorption maximum at 960 nm, the most red-shifted absorption for any bacteriochlorophyll (BChl) a-containing species. Here we present a cryo-EM structure of the strain 970 LH1-RC complex at 2.82 A resolution. The LH1 forms a closed ring structure composed of sixteen pairs of the alphabeta-polypeptides. Sixteen Ca ions are present in the LH1 C-terminal domain and are coordinated by residues from the alphabeta-polypeptides that are hydrogen-bonded to BChl a. The Ca(2+)-facilitated hydrogen-bonding network forms the structural basis of the unusual LH1 redshift. The structure also revealed the arrangement of multiple forms of alpha- and beta-polypeptides in an individual LH1 ring. Such organization indicates a mechanism of interplay between the expression and assembly of the LH1 complex that is regulated through interactions with the RC subunits inside. | |||
Cryo-EM structure of a Ca(2+)-bound photosynthetic LH1-RC complex containing multiple alphabeta-polypeptides.,Tani K, Kanno R, Makino Y, Hall M, Takenouchi M, Imanishi M, Yu LJ, Overmann J, Madigan MT, Kimura Y, Mizoguchi A, Humbel BM, Wang-Otomo ZY Nat Commun. 2020 Oct 2;11(1):4955. doi: 10.1038/s41467-020-18748-3. PMID:33009385<ref>PMID:33009385</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 7c9r" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Thiorhodovibrio sp. 970]] | |||
[[Category: Hall M]] | |||
[[Category: Humbel BM]] | |||
[[Category: Imanishi M]] | |||
[[Category: Kanno R]] | |||
[[Category: Kimura Y]] | |||
[[Category: Madigan MT]] | |||
[[Category: Makino Y]] | |||
[[Category: Mizoguchi A]] | |||
[[Category: Overmann J]] | |||
[[Category: Takenouchi M]] | |||
[[Category: Tani K]] | |||
[[Category: Wang-Otomo Z-Y]] | |||
[[Category: Yu L-J]] | |||
Latest revision as of 09:27, 9 April 2025
STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBRIO STRAIN 970
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