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Characterization of Escherichia coli Type 1 Pilus Mutants with Altered Binding Specificities

Authors
Publisher
American Society for Microbiology
Publication Date
Source
PMC
Keywords
  • Cell Surfaces
Disciplines
  • Biology

Abstract

PCR mutagenesis and a unique enrichment scheme were used to obtain two mutants, each with a single lesion in fimH, the chromosomal gene that encodes the adhesin protein (FimH) of Escherichia coli type 1 pili. These mutants were noteworthy in part because both were altered in the normal range of cell types bound by FimH. One mutation altered an amino acid at a site previously shown to be involved in temperature-dependent binding, and the other altered an amino acid lining the predicted FimH binding pocket.

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