FIG 5.
Typical mutation patterns of FhuA clusters in Enterobacteriaceae. (a) Neighbor-joining tree of FhuA protein in Enterobacteriaceae species supported grouping FhuA into 4 main clusters (I to IV). (b) The indel patterns with corresponding amino acid sequence of different FhuA clusters. (c) Neighbor-joining tree of FhuA proteins after removing the indels and flanking highly mutated sequences (left) and the N-terminal (middle) and C-terminal (right) FhuA protein sequences. Percentage scores from 1,000 bootstrapping tests are displayed at the nodes of the trees.