8gwa
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[8gwa]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlorobaculum_tepidum_TLS Chlorobaculum tepidum TLS]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8GWA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8GWA FirstGlance]. <br> | <table><tr><td colspan='2'>[[8gwa]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlorobaculum_tepidum_TLS Chlorobaculum tepidum TLS]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8GWA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8GWA FirstGlance]. <br> | ||
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.9Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CDL:CARDIOLIPIN'>CDL</scene>, <scene name='pdbligand=F26:2-[(1~{E},3~{E},5~{E},7~{E},9~{E},11~{E},13~{E},15~{E},17~{E},19~{E})-3,7,12,16,20,24-hexamethylpentacosa-1,3,5,7,9,11,13,15,17,19,23-undecaenyl]-1,3,4-trimethyl-benzene'>F26</scene>, <scene name='pdbligand=F39:[(2~{R},3~{S},4~{S},5~{R},6~{R})-6-[(10~{E},12~{E},14~{E})-2,6,10,14,19,23-hexamethyl-25-(2,3,6-trimethylphenyl)pentacosa-6,8,10,12,14,16,18,20,22,24-decaen-2-yl]oxy-3,4,5-tris(oxidanyl)oxan-2-yl]methyl+dodecanoate'>F39</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</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=8gwa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8gwa OCA], [https://pdbe.org/8gwa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8gwa RCSB], [https://www.ebi.ac.uk/pdbsum/8gwa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8gwa ProSAT]</span></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=8gwa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8gwa OCA], [https://pdbe.org/8gwa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8gwa RCSB], [https://www.ebi.ac.uk/pdbsum/8gwa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8gwa ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/BCPA_CHLTE BCPA_CHLTE] Intermediary in the transfer of excitation energy from the chlorophyll to the reaction centers. | [https://www.uniprot.org/uniprot/BCPA_CHLTE BCPA_CHLTE] Intermediary in the transfer of excitation energy from the chlorophyll to the reaction centers. | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The photosynthetic reaction center complex (RCC) of green sulfur bacteria (GSB) consists of the membrane-imbedded RC core and the peripheric energy transmitting proteins called Fenna-Matthews-Olson (FMO). Functionally, FMO transfers the absorbed energy from a huge peripheral light-harvesting antenna named chlorosome to the RC core where charge separation occurs. In vivo, one RC was found to bind two FMOs, however, the intact structure of RCC as well as the energy transfer mechanism within RCC remain to be clarified. Here we report a structure of intact RCC which contains a RC core and two FMO trimers from a thermophilic green sulfur bacterium Chlorobaculum tepidum at 2.9 A resolution by cryo-electron microscopy. The second FMO trimer is attached at the cytoplasmic side asymmetrically relative to the first FMO trimer reported previously. We also observed two new subunits (PscE and PscF) and the N-terminal transmembrane domain of a cytochrome-containing subunit (PscC) in the structure. These two novel subunits possibly function to facilitate the binding of FMOs to RC core and to stabilize the whole complex. A new bacteriochlorophyll (numbered as 816) was identified at the interspace between PscF and PscA-1, causing an asymmetrical energy transfer from the two FMO trimers to RC core. Based on the structure, we propose an energy transfer network within this photosynthetic apparatus. Keywords This article is protected by copyright. All rights reserved. | ||
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| - | Cryo-EM structure of the intact photosynthetic light-harvesting antenna-reaction center complex from a green sulfur bacterium.,Chen JH, Wang W, Wang C, Kuang T, Shen JR, Zhang X J Integr Plant Biol. 2022 Sep 20. doi: 10.1111/jipb.13367. PMID:36125941<ref>PMID:36125941</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 8gwa" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Structure of the intact photosynthetic light-harvesting antenna-reaction center complex from a green sulfur bacterium
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