Fig. 3

Hydrophilicity analysis of the FimH proteins of type 1 fimbriae from four different serotypes of avian pathogenic E.coli. The horizontal axis shows the residue number in the mature peptide; the vertical axis shows the hydrophilicity index. The hydrophilicity patterns are basically the same, and the hydrophilic regions are mainly distributed in positions 64–75, 111–126, and 154–162. The hydrophilicity patterns were generated using Protean in DNA-star software