Files in this Data Supplement:

• Supplemental file 1 - Estimated values of dN, dS, and dN/dS for 13 sets of orthologous genes from bacteriophage strains of APSE (Table S1); comparison of the putative signal peptide in S. enterica serovar Typhi with putative signal peptides in the three CdtB loci carried by APSE strains (Fig. S1); conserved amino acid motifs in StxA as well as the six conserved amino acid motifs found in the putative analog of StxA in the phage APSE, gene P9 (Fig. S2).
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