Figure 4

Schematic representation of the Int ₂ F-3'CS amplicon of the strain MB45. CS, conserved segment; int I1, integrase gene; att I1, attachment site; dfr, dihydrofolate reductase; be, base element. Black thick bar shows the distribution of integron features on amplified product. The translation start (GTG) and stop (TAA) codon are in underlined bold face. In the 59 be, the putative integrase binding sites 1L, 2L, 1R and 2R are indicated by arrows. Termination of 59 be is indicated by star (*). Numbers correspond to sequence positions in EMBL Ac. No. AM997279.