2OMV image
Deposition Date 2007-01-23
Release Date 2007-06-05
Last Version Date 2023-08-30
Entry Detail
PDB ID:
2OMV
Title:
Crystal structure of InlA S192N Y369S/hEC1 complex
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.21
R-Value Work:
0.15
R-Value Observed:
0.15
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Internalin-A
Mutations:S192N Y369S
Chain IDs:A
Chain Length:461
Number of Molecules:1
Biological Source:Listeria monocytogenes
Polymer Type:polypeptide(L)
Molecule:Epithelial-cadherin
Gene (Uniprot):CDH1
Chain IDs:B
Chain Length:105
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Extending the host range of Listeria monocytogenes by rational protein design.
Cell(Cambridge,Mass.) 129 891 902 (2007)
PMID: 17540170 DOI: 10.1016/j.cell.2007.03.049

Abstact

In causing disease, pathogens outmaneuver host defenses through a dedicated arsenal of virulence determinants that specifically bind or modify individual host molecules. This dedication limits the intruder to a defined range of hosts. Newly emerging diseases mostly involve existing pathogens whose arsenal has been altered to allow them to infect previously inaccessible hosts. We have emulated this chance occurrence by extending the host range accessible to the human pathogen Listeria monocytogenes by the intestinal route to include the mouse. Analyzing the recognition complex of the listerial invasion protein InlA and its human receptor E-cadherin, we postulated and verified amino acid substitutions in InlA to increase its affinity for E-cadherin. Two single substitutions increase binding affinity by four orders of magnitude and extend binding specificity to include formerly incompatible murine E-cadherin. By rationally adapting a single protein, we thus create a versatile murine model of human listeriosis.

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Primary Citation of related structures