FIG. 2.
Comparison of the different genetic structures in which the blaVEB-1-like genes have been identified. The diagram in panel A corresponds to the present description of an ISCR2-associated blaVEB-1a gene, that in panel B shows the blaVEB-1a gene in the form of a gene cassette inside a class 1 integron as reported previously (21), and the diagram in panel C depicts the blaVEB-1a gene bracketed by the Re1 and Re2 elements as described elsewhere (3, 12). The core and inverse core sites bracketing the blaVEB-1a gene and defining its corresponding cassette are indicated by black circles.