2xsc: Difference between revisions
From Proteopedia
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[ | ==CRYSTAL STRUCTURE OF THE CELL-BINDING B OLIGOMER OF VEROTOXIN-1 FROM E. COLI== | ||
<StructureSection load='2xsc' size='340' side='right' caption='[[2xsc]], [[Resolution|resolution]] 2.05Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2xsc]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1bov 1bov]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2XSC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2XSC FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ojf|1ojf]]</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=2xsc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xsc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2xsc RCSB], [http://www.ebi.ac.uk/pdbsum/2xsc PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The Shiga toxin family, a group of cytotoxins associated with diarrhoeal diseases and the haemolytic uraemic syndrome, includes Shiga toxin from Shigella dysenteriae type 1 and verotoxins produced by enteropathogenic Escherichia coli. The family belongs to the A-B class of bacterial toxins, which includes the cholera toxin family, pertussis and diphtheria toxins. These toxins all have bipartite structures consisting of an enzymatic A subunit associated with a B oligomer which binds to specific cell-surface receptors, but their amino-acid sequences and pathogenic mechanisms differ. We have determined the crystal structure of the B oligomer of verotoxin-1 from E. coli. The structure unexpectedly resembles that of the B oligomer of the cholera toxin-like heat-labile enterotoxin from E. coli, despite the absence of detectable sequence similarity between these two proteins. This result implies a distant evolutionary relationship between the Shiga toxin and cholera toxin families. We suggest that the cell surface receptor-binding site lies in a cleft between adjacent subunits of the B pentamer, providing a potential target for drugs and vaccines to prevent toxin binding and effect. | |||
Crystal structure of the cell-binding B oligomer of verotoxin-1 from E. coli.,Stein PE, Boodhoo A, Tyrrell GJ, Brunton JL, Read RJ Nature. 1992 Feb 20;355(6362):748-50. PMID:1741063<ref>PMID:1741063</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Shiga toxin|Shiga toxin]] | *[[Shiga toxin|Shiga toxin]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Boodhoo, A.]] | [[Category: Boodhoo, A.]] | ||
