6v3z: Difference between revisions
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==Structure of Salmonella enteritidis Sen1395== | |||
<StructureSection load='6v3z' size='340' side='right'caption='[[6v3z]], [[Resolution|resolution]] 1.90Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6v3z]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6V3Z OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6V3Z 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=6v3z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6v3z OCA], [http://pdbe.org/6v3z PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6v3z RCSB], [http://www.ebi.ac.uk/pdbsum/6v3z PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6v3z ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Typhoid toxin is a virulence factor for the bacterial pathogen Salmonella Typhi, which causes typhoid fever in humans. After its synthesis by intracellular bacteria, typhoid toxin is secreted into the lumen of the Salmonella-containing vacuole by a secretion mechanism strictly dependent on TtsA, a specific muramidase that facilitates toxin transport through the peptidoglycan layer. Here we show that substrate recognition by TtsA depends on a discrete domain within its carboxy terminus, which targets the enzyme to the bacterial poles to recognize YcbB-edited peptidoglycan. Comparison of the atomic structures of TtsA bound to its substrate and that of a close homolog with different specificity identified specific determinants involved in substrate recognition. Combined with structure-guided mutagenesis and in vitro and in vivo crosslinking experiments, this study provides an unprecedented view of the mechanisms by which a muramidase recognizes its peptidoglycan substrate to facilitate protein secretion. | |||
Mechanisms of substrate recognition by a typhoid toxin secretion-associated muramidase.,Geiger T, Lara-Tejero M, Xiong Y, Galan JE Elife. 2020 Jan 20;9. pii: 53473. doi: 10.7554/eLife.53473. PMID:31958059<ref>PMID:31958059</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6v3z" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Galan, J E]] | |||
[[Category: Lara-Tejero, M]] | [[Category: Lara-Tejero, M]] | ||
[[Category: | [[Category: Muramidase lysozyme-like peptidoglycan-binding]] | ||
[[Category: Protein transport]] | |||