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Table 3 Distribution of gene cassette arrays found in class 1 integrons among phylogenetic groups of E. coli belongs to Ec-ESBL collection

From: Molecular characterization of multiresistant Escherichia coli producing or not extended-spectrum β-lactamases

   Phylogenetic groups (number of isolates)
Cassettes Total A (N=23) B1 (N=26) B2 (N=5) D (N=15)
ant(3″ )-Ia 3 2 (8.7%) 0 0 1 (6.7%)
dfrA1-ant(3″ )-Ia 7 4 (17.4%) 2 (7.7%) 0 1 (6.7%)
bla OXA-1 -ant(3″ )-Ia 1 1 (4.3%) 0 0 0
dfrA12-ant(3″ )-Ib 0 0 0 0 0
dfrA16-ant(3″ )-Ib 4 2 (8.7%) 1 (3.8%) 0 1 (6.7%)
dfrA17-ant(3″ )-Ie 8 3 (13%) 1 (3.8%) 1 (20%) 3 (20%)
ant(2″ )-Ia 0 0 0 0 0
ant(3″ )-Ia-ant(2 )-Ia 0 0 0 0 0