7vnj: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7vnj]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridioides_difficile Clostridioides difficile]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7VNJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7VNJ FirstGlance]. <br>
<table><tr><td colspan='2'>[[7vnj]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridioides_difficile Clostridioides difficile]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7VNJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7VNJ FirstGlance]. <br>
</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></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.56&#8491;</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></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=7vnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7vnj OCA], [https://pdbe.org/7vnj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7vnj RCSB], [https://www.ebi.ac.uk/pdbsum/7vnj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7vnj 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=7vnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7vnj OCA], [https://pdbe.org/7vnj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7vnj RCSB], [https://www.ebi.ac.uk/pdbsum/7vnj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7vnj ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/A8DS70_CLODI A8DS70_CLODI]  
[https://www.uniprot.org/uniprot/A8DS70_CLODI A8DS70_CLODI]  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Some bacteria express a binary toxin translocation system, consisting of an enzymatic subunit and translocation pore, that delivers enzymes into host cells through endocytosis. The most clinically important bacterium with such a system is Clostridioides difficile (formerly Clostridium). The CDTa and CDTb proteins from its system represent important therapeutic targets. CDTb has been proposed to be a di-heptamer, but its physiological heptameric structure has not yet been reported. Here, we report the cryo-EM structure of CDTa bound to the CDTb-pore, which reveals that CDTa binding induces partial unfolding and tilting of the first CDTa alpha-helix. In the CDTb-pore, an NSS-loop exists in 'in' and 'out' conformations, suggesting its involvement in substrate translocation. Finally, 3D variability analysis revealed CDTa movements from a folded to an unfolded state. These dynamic structural information provide insights into drug design against hypervirulent C. difficile strains.
Cryo-EM structures of the translocational binary toxin complex CDTa-bound CDTb-pore from Clostridioides difficile.,Kawamoto A, Yamada T, Yoshida T, Sato Y, Kato T, Tsuge H Nat Commun. 2022 Oct 17;13(1):6119. doi: 10.1038/s41467-022-33888-4. PMID:36253419<ref>PMID:36253419</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7vnj" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
</StructureSection>

Latest revision as of 06:21, 19 June 2024

Complex structure of Clostridioides difficile enzymatic component (CDTa) and binding component (CDTb) pore with short stem

7vnj, resolution 2.56Å

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