2jw1: Difference between revisions
New page: '''Unreleased structure''' The entry 2jw1 is ON HOLD until Paper Publication Authors: Okon, M.S., Lario, P.I., Creagh, L., Jung, Y.M.T., Maurelli, A.T., Strynadka, N.C.J., McIntosh, L.P... |
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==Structural characterization of the type III pilotin-secretin interaction in Shigella flexneri by NMR spectroscopy== | |||
<StructureSection load='2jw1' size='340' side='right'caption='[[2jw1]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2jw1]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Shigella_flexneri Shigella flexneri] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JW1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JW1 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 15 models</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</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=2jw1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jw1 OCA], [https://pdbe.org/2jw1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jw1 RCSB], [https://www.ebi.ac.uk/pdbsum/2jw1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jw1 ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Assembly of the type-III secretion apparatus, which translocates proteins through both membranes of Gram-negative bacterial pathogens into host cells, requires the formation of an integral outer-membrane secretin ring. Typically, a small lipidated pilot protein is necessary for the stabilization and localization of this ring. Using NMR spectroscopy, we demonstrate that the C-terminal residues 553-570 of the Shigella flexneri secretin MxiD encompass the minimal binding domain for its cognate pilot MxiM. Although unstructured in isolation, upon complex formation with MxiM, these residues fold into an amphipathic turn-helix motif that caps the elongated hydrophobic cavity of the cracked beta-barrel pilot. Along with a rearrangement of core aromatic residues, this prevents the binding of lipids within the cavity. The mutually exclusive association of lipids and MxiD with MxiM establishes a framework for understanding the role of a pilot in the outer-membrane insertion and multimerization of the secretin ring. | |||
Structural characterization of the type-III pilot-secretin complex from Shigella flexneri.,Okon M, Moraes TF, Lario PI, Creagh AL, Haynes CA, Strynadka NC, McIntosh LP Structure. 2008 Oct 8;16(10):1544-54. PMID:18940609<ref>PMID:18940609</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2jw1" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Shigella flexneri]] | |||
[[Category: Synthetic construct]] | |||
[[Category: Creagh L]] | |||
[[Category: Jung YMT]] | |||
[[Category: Lario PI]] | |||
[[Category: Maurelli AT]] | |||
[[Category: McIntosh LP]] | |||
[[Category: Okon MS]] | |||
[[Category: Strynadka NCJ]] | |||