Species-wide variation in the Escherichia coli flagellin (H-antigen) gene.

Abstract excerpt

Escherichia coli is a clonal species. The best-understood components of its clonal variation are the flagellar (H) and polysaccharide (O) antigens, both well documented since the mid-1930s because of their use in serotyping. Flagellin is the protein subunit of the flagellum that carries H-antigen specificity. We show that 43 of the 54 H-antigen specificities of E. coli map to the flagellin gene at fliC and...

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