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9cbc
From Proteopedia
(Difference between revisions)
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| - | '''Unreleased structure''' | ||
| - | + | ==Yersinia entomophaga holotoxin complex in pore conformation== | |
| + | <StructureSection load='9cbc' size='340' side='right'caption='[[9cbc]], [[Resolution|resolution]] 6.43Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[9cbc]] is a 17 chain structure with sequence from [https://en.wikipedia.org/wiki/Yersinia_entomophaga Yersinia entomophaga]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9CBC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9CBC 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]] 6.43Å</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=9cbc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9cbc OCA], [https://pdbe.org/9cbc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9cbc RCSB], [https://www.ebi.ac.uk/pdbsum/9cbc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9cbc ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/YENA1_YERET YENA1_YERET] Part of an orally active toxin complex (TC) with strong insecticidal effects on larvae of the Coleoptera Costelytra zealandica, Acrossidius tasmania and Adoryphorus couloni and some Lepidoptera larvae (PubMed:21278295, PubMed:22158901). The TC has an endochitinase activity (PubMed:21278295) (Probable).<ref>PMID:21278295</ref> <ref>PMID:22158901</ref> <ref>PMID:22158901</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | ABC toxins are toxin-translocating, pore-forming proteins found in a wide range of insecticidal bacteria and some mammalian pathogens. The Yersinia entomopahaga toxin complex (YenTc) belongs to a distinct subclass of ABC toxins, defined by a divergent molecular architecture. Structural details that define their mechanism of action remain to be elucidated. Here we determine structures of the YenTc holotoxin assembly in both prepore and pore-forming configurations using cryo-EM in conjunction with Alphafold2-assisted structural modelling of flexible domains. We define the structural mechanism via which enzymatically-active chitinase subunits are incorporated, and show using phylogenetic analyses that this subclass-defining feature has evolved relatively recently. Our structures point to the existence of distinct conformational states in YenTc, which may distinguish it from other structurally-characterised ABC toxins, or represent states on a shared mechanistic trajectory. Thus, our findings enhance our understanding of the structural diversity that defines distinct ABC toxin subclasses. | ||
| - | + | Complete structures of the YenTc holotoxin prepore and pore reveal the evolutionary basis for chitinase incorporation into ABC toxins.,Low YS, Roche SG, Aleksandrova NA, Foley G, Low JK, Box JK, Croll TI, Chassagnon IR, Lott JS, Deplazes E, Boden M, Hurst MR, Piper SJ, Landsberg MJ Nat Commun. 2025 Dec 15;16(1):11121. doi: 10.1038/s41467-025-66050-x. PMID:41397958<ref>PMID:41397958</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 9cbc" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Yersinia entomophaga]] | ||
| + | [[Category: Landsberg MJ]] | ||
| + | [[Category: Low YS]] | ||
Current revision
Yersinia entomophaga holotoxin complex in pore conformation
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