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6njo

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==Structure of the assembled ATPase EscN from the enteropathogenic E. coli (EPEC) type III secretion system==
==Structure of the assembled ATPase EscN from the enteropathogenic E. coli (EPEC) type III secretion system==
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<StructureSection load='6njo' size='340' side='right'caption='[[6njo]], [[Resolution|resolution]] 3.34&Aring;' scene=''>
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<SX load='6njo' size='340' side='right' viewer='molstar' caption='[[6njo]], [[Resolution|resolution]] 3.34&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6njo]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Eco27 Eco27]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6NJO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6NJO FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6njo]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_O127:H6_str._E2348/69 Escherichia coli O127:H6 str. E2348/69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6NJO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6NJO FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=AF3:ALUMINUM+FLUORIDE'>AF3</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.34&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">escN, E2348C_3948 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=574521 ECO27])</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=AF3:ALUMINUM+FLUORIDE'>AF3</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<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=6njo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6njo OCA], [http://pdbe.org/6njo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6njo RCSB], [http://www.ebi.ac.uk/pdbsum/6njo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6njo ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6njo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6njo OCA], [https://pdbe.org/6njo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6njo RCSB], [https://www.ebi.ac.uk/pdbsum/6njo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6njo ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/B7UMA6_ECO27 B7UMA6_ECO27]
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Many Gram-negative bacteria, including causative agents of dysentery, plague, and typhoid fever, rely on a type III secretion system - a multi-membrane spanning syringe-like apparatus - for their pathogenicity. The cytosolic ATPase complex of this injectisome is proposed to play an important role in energizing secretion events and substrate recognition. We present the 3.3 A resolution cryo-EM structure of the enteropathogenic Escherichia coli ATPase EscN in complex with its central stalk EscO. The structure shows an asymmetric pore with different functional states captured in its six catalytic sites, details directly supporting a rotary catalytic mechanism analogous to that of the heterohexameric F1/V1-ATPases despite its homohexameric nature. Situated at the C-terminal opening of the EscN pore is one molecule of EscO, with primary interaction mediated through an electrostatic interface. The EscN-EscO structure provides significant atomic insights into how the ATPase contributes to type III secretion, including torque generation and binding of chaperone/substrate complexes.
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Cryo-EM structure of the homohexameric T3SS ATPase-central stalk complex reveals rotary ATPase-like asymmetry.,Majewski DD, Worrall LJ, Hong C, Atkinson CE, Vuckovic M, Watanabe N, Yu Z, Strynadka NCJ Nat Commun. 2019 Feb 7;10(1):626. doi: 10.1038/s41467-019-08477-7. PMID:30733444<ref>PMID:30733444</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 6njo" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
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</StructureSection>
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</SX>
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[[Category: Eco27]]
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[[Category: Escherichia coli O127:H6 str. E2348/69]]
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Atkinson, C E]]
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[[Category: Atkinson CE]]
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[[Category: Hong, C]]
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[[Category: Hong C]]
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[[Category: Majewski, D D]]
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[[Category: Majewski DD]]
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[[Category: Strynadka, N C.J]]
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[[Category: Strynadka NCJ]]
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[[Category: Vuckovic, M]]
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[[Category: Vuckovic M]]
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[[Category: Watanabe, N]]
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[[Category: Watanabe N]]
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[[Category: Worrall, L J]]
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[[Category: Worrall LJ]]
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[[Category: Yu, Z]]
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[[Category: Yu Z]]
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[[Category: Adp]]
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[[Category: Atpase]]
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[[Category: Hexamer]]
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[[Category: Hydrolase]]
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[[Category: Type iii secretion system]]
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Current revision

Structure of the assembled ATPase EscN from the enteropathogenic E. coli (EPEC) type III secretion system

6njo, resolution 3.34Å

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