2ver

STRUCTURAL MODEL FOR THE COMPLEX BETWEEN THE DR ADHESINS AND CARCINOEMBRYONIC ANTIGEN (CEA)

spinqualitylabelsall models 2ver, 1 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2ver is a 2 chain structure with sequence from Escherichia coli and Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MTN Related: 1e07, 1ut2, 1usz, 2ixq, 1rxl Resources: FirstGlance, OCA, RCSB, PDBsum Function [AFAE3_ECOLX] Hemagglutinins of uropathogenic E.coli mediate adherence to the upper urinary tract. These adhesins bind to the Dr blood group antigen and also agglutinate human erythrocytes in the presence of D-mannose (mannose-resistant hemagglutination (MRHA)). [CEAM5_HUMAN] Cell surface glycoprotein that plays a role in cell adhesion and in intracellular signaling. Receptor for E.coli Dr adhesins. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Carcinoembryonic antigen (CEA)-related cell adhesion molecules (CEACAMs) are host receptors for the Dr family of adhesins of Escherichia coli. To define the mechanism for binding of Dr adhesins to CEACAM receptors, we carried out structural studies on the N-terminal domain of CEA and its complex with the Dr adhesin. The crystal structure of CEA reveals a dimer similar to other dimers formed by receptors with IgV-like domains. The structure of the CEA/Dr adhesin complex is proposed based on NMR spectroscopy and mutagenesis data in combination with biochemical characterization. The Dr adhesin/CEA interface overlaps appreciably with the region responsible for CEA dimerization. Binding kinetics, mutational analysis and spectroscopic examination of CEA dimers suggest that Dr adhesins can dissociate CEA dimers prior to the binding of monomeric forms. Our conclusions include a plausible mechanism for how E. coli, and perhaps other bacterial and viral pathogens, exploit CEACAMs. The present structure of the complex provides a powerful tool for the design of novel inhibitory strategies to treat E. coli infections. Binding of Dr adhesins of Escherichia coli to carcinoembryonic antigen triggers receptor dissociation.,Korotkova N, Yang Y, Le Trong I, Cota E, Demeler B, Marchant J, Thomas WE, Stenkamp RE, Moseley SL, Matthews S Mol Microbiol. 2008 Jan;67(2):420-34. Epub 2007 Dec 11. PMID:18086185 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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