Figure 5.

The first and last 17 motifs of CRISPR NC_007503_3 from Carboxydothermus hydrogenoformans Z-2901. The DRs shared by the two CRISPR loci NC_007503_3 and NC_007503_4 are shown in yellow and the variant DR observed only in NC_007503_3 is in red. CRISPR units (DR + spacer) are numbered on the left and spacers' length is indicated on the right.