5wez
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Structure of the Tir-CesT effector-chaperone complex== | |
| - | + | <StructureSection load='5wez' size='340' side='right' caption='[[5wez]], [[Resolution|resolution]] 2.74Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[5wez]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5WEZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5WEZ FirstGlance]. <br> | |
| - | + | </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=5wez FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wez OCA], [http://pdbe.org/5wez PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5wez RCSB], [http://www.ebi.ac.uk/pdbsum/5wez PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5wez ProSAT]</span></td></tr> | |
| - | [[Category: | + | </table> |
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/CEST_ECO27 CEST_ECO27]] Chaperone for the type III secretion of Tir. Probably stabilizes the protein, prevents inappropriate protein-proteininteractions and aids in secretion. [[http://www.uniprot.org/uniprot/TIR_ECO27 TIR_ECO27]] Multifunctional protein that is required for efficient pedestal formation in host epithelial cells during infection. The extracellular region acts as a receptor for bacterial intimin, allowing the bacterium to attach tightly to the host-cell surface. Simultaneously, the intracellular region initiates a signaling cascade in the host cell, which leads to actin polymerization and formation of actin pedestals at the sites of bacterial adhesion. In strain E2348/69, acts mainly via the host adaptor proteins NCK1 and NCK2. Once clustered and phosphorylated at Tyr-474, Tir binds to NCK proteins, which in turn bind and activate host WASL/N-WASP, leading to actin polymerization. Can also trigger an inefficient, NCK-independent pedestal formation. This pathway involves phosphorylation of Tyr-454 and probably a putative host adaptor. Acts also via direct binding to the host cytoskeletal protein alpha-actinin in a NCK- and phosphotyrosine-independent manner. This interaction may stabilize the pedestal, but is not essential for its formation.<ref>PMID:10096089</ref> <ref>PMID:14757753</ref> <ref>PMID:14764108</ref> <ref>PMID:15813734</ref> <ref>PMID:17521329</ref> <ref>PMID:9390560</ref> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Coombes, B K]] | ||
| + | [[Category: Little, D J]] | ||
| + | [[Category: Chaperone]] | ||
| + | [[Category: Complex]] | ||
| + | [[Category: Effector]] | ||
| + | [[Category: Secretion]] | ||
| + | [[Category: Translocation]] | ||
Revision as of 05:36, 11 July 2018
Structure of the Tir-CesT effector-chaperone complex
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Categories: Coombes, B K | Little, D J | Chaperone | Complex | Effector | Secretion | Translocation
