6ef8

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<StructureSection load='6ef8' size='340' side='right'caption='[[6ef8]], [[Resolution|resolution]] 3.70&Aring;' scene=''>
<StructureSection load='6ef8' size='340' side='right'caption='[[6ef8]], [[Resolution|resolution]] 3.70&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6ef8]] is a 7 chain structure with sequence from [http://en.wikipedia.org/wiki/Geobacter_sulfurreducens_(strain_atcc_51573_/_dsm_12127_/_pca) Geobacter sulfurreducens (strain atcc 51573 / dsm 12127 / pca)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EF8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6EF8 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6ef8]] is a 7 chain structure with sequence from [http://en.wikipedia.org/wiki/Geosl Geosl]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EF8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6EF8 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEC:HEME+C'>HEC</scene></td></tr>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEC:HEME+C'>HEC</scene></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=6ef8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ef8 OCA], [http://pdbe.org/6ef8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ef8 RCSB], [http://www.ebi.ac.uk/pdbsum/6ef8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ef8 ProSAT]</span></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=6ef8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ef8 OCA], [http://pdbe.org/6ef8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ef8 RCSB], [http://www.ebi.ac.uk/pdbsum/6ef8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ef8 ProSAT]</span></td></tr>
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== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/OMCS_GEOSL OMCS_GEOSL]] Plays an important role in extracellular electron transfer. Can transfer electrons to insoluble Fe(3+) oxides as well as other extracellular electron acceptors, including Mn(4+) oxide and humic substances (PubMed:16332857, PubMed:20400557, PubMed:21236241). Essential for direct interspecies electron transfer (DIET) in cocultures with G. metallireducens (PubMed:23377933).<ref>PMID:16332857</ref> <ref>PMID:20400557</ref> <ref>PMID:21236241</ref> <ref>PMID:23377933</ref>
[[http://www.uniprot.org/uniprot/OMCS_GEOSL OMCS_GEOSL]] Plays an important role in extracellular electron transfer. Can transfer electrons to insoluble Fe(3+) oxides as well as other extracellular electron acceptors, including Mn(4+) oxide and humic substances (PubMed:16332857, PubMed:20400557, PubMed:21236241). Essential for direct interspecies electron transfer (DIET) in cocultures with G. metallireducens (PubMed:23377933).<ref>PMID:16332857</ref> <ref>PMID:20400557</ref> <ref>PMID:21236241</ref> <ref>PMID:23377933</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Long-range (&gt;10 mum) transport of electrons along networks of Geobacter sulfurreducens protein filaments, known as microbial nanowires, has been invoked to explain a wide range of globally important redox phenomena. These nanowires were previously thought to be type IV pili composed of PilA protein. Here, we report a 3.7 A resolution cryoelectron microscopy structure, which surprisingly reveals that, rather than PilA, G. sulfurreducens nanowires are assembled by micrometer-long polymerization of the hexaheme cytochrome OmcS, with hemes packed within approximately 3.5-6 A of each other. The inter-subunit interfaces show unique structural elements such as inter-subunit parallel-stacked hemes and axial coordination of heme by histidines from neighboring subunits. Wild-type OmcS filaments show 100-fold greater conductivity than other filaments from a DeltaomcS strain, highlighting the importance of OmcS to conductivity in these nanowires. This structure explains the remarkable capacity of soil bacteria to transport electrons to remote electron acceptors for respiration and energy sharing.
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Structure of Microbial Nanowires Reveals Stacked Hemes that Transport Electrons over Micrometers.,Wang F, Gu Y, O'Brien JP, Yi SM, Yalcin SE, Srikanth V, Shen C, Vu D, Ing NL, Hochbaum AI, Egelman EH, Malvankar NS Cell. 2019 Apr 4;177(2):361-369.e10. doi: 10.1016/j.cell.2019.03.029. PMID:30951668<ref>PMID:30951668</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 6ef8" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Geosl]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Egelman, E H]]
[[Category: Egelman, E H]]

Revision as of 06:47, 17 April 2019

Cryo-EM of the OmcS nanowires from Geobacter sulfurreducens

PDB ID 6ef8

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