View source for 8xkh


==Structure of chimeric RyR Complex with tetraniliprole==
<StructureSection load='8xkh' size='340' side='right'caption='[[8xkh]], [[Resolution|resolution]] 3.87&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8xkh]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8XKH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8XKH 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]] 3.87&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A1LV1:2-(3-chloranylpyridin-2-yl)-~{N}-[4-cyano-2-methyl-6-(methylcarbamoyl)phenyl]-5-[[5-(trifluoromethyl)-1,2,3,4-tetrazol-2-yl]methyl]pyrazole-3-carboxamide'>A1LV1</scene>, <scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CFF:CAFFEINE'>CFF</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=8xkh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8xkh OCA], [https://pdbe.org/8xkh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8xkh RCSB], [https://www.ebi.ac.uk/pdbsum/8xkh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8xkh ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/CALM1_HUMAN CALM1_HUMAN] The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of CPVT4.  The disease is caused by mutations affecting the gene represented in this entry. Mutations in CALM1 are the cause of LQT14.
== Function ==
[https://www.uniprot.org/uniprot/CALM1_HUMAN CALM1_HUMAN] Calmodulin mediates the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis (PubMed:16760425). Mediates calcium-dependent inactivation of CACNA1C (PubMed:26969752). Positively regulates calcium-activated potassium channel activity of KCNN2 (PubMed:27165696).<ref>PMID:16760425</ref> <ref>PMID:23893133</ref> <ref>PMID:26969752</ref> <ref>PMID:27165696</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The resistance of pests to common insecticides is a global issue that threatens food production worldwide. Diamide insecticides target insect ryanodine receptors (RyRs), causing uncontrolled calcium release from the sarcoplasmic and endoplasmic reticulum. Despite their high potency and species selectivity, several resistance mutations have emerged. Using a chimeric RyR (chiRyR) approach and cryo-electron microscopy (cryo-EM), we investigate how insect RyRs engage two different diamide insecticides from separate families: flubendiamide, a phthalic acid derivative, and tetraniliprole, an anthranilic compound. Both compounds target the same site in the transmembrane region of the RyR, albeit with different poses, and promote channel opening through coupling with the pore-forming domain. To explore the resistance mechanisms, we also solve two cryo-EM structures of chiRyR carrying the two most common resistance mutations, I4790M and G4946E, both alone and in complex with the diamide insecticide chlorantraniliprole. The resistance mutations perturb the local structure, directly reducing the binding affinity and altering the binding pose. Our findings elucidate the mode of action of different diamide insecticides, reveal the molecular mechanism of resistance mutations, and provide important clues for the development of novel pesticides that can bypass the resistance mutations.

Cryo-EM structures of ryanodine receptors and diamide insecticides reveal the mechanisms of selectivity and resistance.,Lin L, Wang C, Wang W, Jiang H, Murayama T, Kobayashi T, Hadiatullah H, Chen YS, Wu S, Wang Y, Korza H, Gu Y, Zhang Y, Du J, Van Petegem F, Yuchi Z Nat Commun. 2024 Oct 20;15(1):9056. doi: 10.1038/s41467-024-53490-0. PMID:39428398<ref>PMID:39428398</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8xkh" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Oryctolagus cuniculus]]
[[Category: Jiang H]]
[[Category: Lin L]]
[[Category: Wang C]]
[[Category: Wang W]]
[[Category: Yuchi Z]]