Fig. 4.—
Structures of the Escherichia albertii ETT2 (E. coli T3SS 2) region. Gene organizations of the ETT2 regions of three fully sequenced E. albertii strains are shown. For comparison, the ETT2 region of the enteroaggregative E. coli strain 042 is also shown. Note that the ETT2 region has been highly degraded in most E. coli strains.