4qd2: Difference between revisions
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4qd2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qd2 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4qd2 RCSB], [http://www.ebi.ac.uk/pdbsum/4qd2 PDBsum]</span></td></tr> | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4qd2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qd2 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4qd2 RCSB], [http://www.ebi.ac.uk/pdbsum/4qd2 PDBsum]</span></td></tr> | ||
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== Publication Abstract from PubMed == | |||
How botulinum neurotoxins (BoNTs) cross the host intestinal epithelial barrier in foodborne botulism is poorly understood. Here, we present the crystal structure of a clostridial hemagglutinin (HA) complex of serotype BoNT/A bound to the cell adhesion protein E-cadherin at 2.4 angstroms. The HA complex recognizes E-cadherin with high specificity involving extensive intermolecular interactions and also binds to carbohydrates on the cell surface. Binding of the HA complex sequesters E-cadherin in the monomeric state, compromising the E-cadherin-mediated intercellular barrier and facilitating paracellular absorption of BoNT/A. We reconstituted the complete 14-subunit BoNT/A complex using recombinantly produced components and demonstrated that abolishing either E-cadherin- or carbohydrate-binding of the HA complex drastically reduces oral toxicity of BoNT/A complex in vivo. Together, these studies establish the molecular mechanism of how HAs contribute to the oral toxicity of BoNT/A. | |||
Molecular basis for disruption of E-cadherin adhesion by botulinum neurotoxin A complex.,Lee K, Zhong X, Gu S, Kruel AM, Dorner MB, Perry K, Rummel A, Dong M, Jin R Science. 2014 Jun 20;344(6190):1405-10. doi: 10.1126/science.1253823. PMID:24948737<ref>PMID:24948737</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
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== References == | |||
<references/> | |||
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</StructureSection> | </StructureSection> | ||
Revision as of 06:19, 2 July 2014
Molecular basis for disruption of E-cadherin adhesion by botulinum neurotoxin A complex
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