X-ray structure of the FimC-FimH chaperone-adhesin complex from uropathogenic Escherichia coli
- PMID: 10446051
- DOI: 10.1126/science.285.5430.1061
X-ray structure of the FimC-FimH chaperone-adhesin complex from uropathogenic Escherichia coli
Abstract
Type 1 pili-adhesive fibers expressed in most members of the Enterobacteriaceae family-mediate binding to mannose receptors on host cells through the FimH adhesin. Pilus biogenesis proceeds by way of the chaperone/usher pathway. The x-ray structure of the FimC-FimH chaperone-adhesin complex from uropathogenic Escherichia coli at 2.5 angstrom resolution reveals the basis for carbohydrate recognition and for pilus assembly. The carboxyl-terminal pilin domain of FimH has an immunoglobulin-like fold, except that the seventh strand is missing, leaving part of the hydrophobic core exposed. A donor strand complementation mechanism in which the chaperone donates a strand to complete the pilin domain explains the basis for both chaperone function and pilus biogenesis.
Comment in
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How chaperones protect virgin proteins.Science. 1999 Aug 13;285(5430):1021-2. doi: 10.1126/science.285.5430.1021. Science. 1999. PMID: 10475844 No abstract available.
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