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Presence of chemotaxis genes in completely sequenced Escherichia/Shigella genomes. Full strain names and properties are listed in Data Set S1 in the supplemental material. Phylogenetic relationships are shown in the center; a complete phylogenetic tree is available in Fig. S1 in the supplemental material. Branches are colored according to previously established phylotypes. E. coli K-12 strain W3110 (model for chemotaxis) is marked with an asterisk.
