View source for 4oyc


==Crystal structure of the PrgK periplasmic domain 2==
<StructureSection load='4oyc' size='340' side='right'caption='[[4oyc]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4oyc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_Typhimurium_str._LT2 Salmonella enterica subsp. enterica serovar Typhimurium str. LT2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OYC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OYC FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6&#8491;</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=4oyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4oyc OCA], [https://pdbe.org/4oyc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4oyc RCSB], [https://www.ebi.ac.uk/pdbsum/4oyc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4oyc ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PRGK_SALTY PRGK_SALTY] Required for invasion of epithelial cells. Could be involved in protein secretion.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The type III secretion system (T3SS) is a large macromolecular assembly found at the surface of many pathogenic Gram-negative bacteria. Its role is to inject toxic "effector" proteins into the cells of infected organisms. The molecular details of the assembly of this large, multimembrane-spanning complex remain poorly understood. Here, we report structural, biochemical, and functional analyses of PrgK, an inner-membrane component of the prototypical Salmonella typhimurium T3SS. We have obtained the atomic structures of the two ring building globular domains and show that the C-terminal transmembrane helix is not essential for assembly and secretion. We also demonstrate that structural rearrangement of the two PrgK globular domains, driven by an interconnecting linker region, may promote oligomerization into ring structures. Finally, we used electron microscopy-guided symmetry modeling to propose a structural model for the intimately associated PrgH-PrgK ring interaction within the assembled basal body.

The Modular Structure of the Inner-Membrane Ring Component PrgK Facilitates Assembly of the Type III Secretion System Basal Body.,Bergeron JR, Worrall LJ, De S, Sgourakis NG, Cheung AH, Lameignere E, Okon M, Wasney GA, Baker D, McIntosh LP, Strynadka NC Structure. 2015 Jan 6;23(1):161-72. doi: 10.1016/j.str.2014.10.021. Epub 2014 Dec, 18. PMID:25533490<ref>PMID:25533490</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4oyc" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Salmonella enterica subsp. enterica serovar Typhimurium str. LT2]]
[[Category: Bergeron JRC]]
[[Category: Strynadka NCJ]]