Figure 6

CRISPR spacer homology to genetic elements and proto-spacer associated motifs. Left, top 10 matches between CRISPR spacers and corresponding proto-spacers in phages, plasmids and chromosomal sequences. Numbers indicate the spacer position from the leader end. Levels of sequence similarity, location of the start and end of the match, and sequence immediately upstream (START-7) or immediately downstream (END+7) are provided. Right, conservation of certain nucleotides in the immediate vicinity of the proto-spacer sequence.