FIG. 1.
Differential gene expression in the class 1 integron of the AbaR1 island from strain AYE. The ratio was determined by comparing the expression levels of every gene between strains AYE and CIP 70-10. 5′CS and 3′CS, 5′ and 3′ conserved sequences of class 1 integron; *, statistically significant; ND, not determined. Arrows indicate coding sequences and sense of transcription. Bent arrows represent the promoters for the gene cassettes, with IS1999 bringing a strong promoter. Decreased intensity in gray indicates decreased overexpression from blaVEB-1 to blaOXA-10.