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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Mol Microbiol. 2014 Aug 21;94(1):9–20. doi: 10.1111/mmi.12742

Figure 3. Schematic of how a type II-A CRISPR/Cas system generates new spacer sequences, processes pre-crRNA into mature crRNA transcripts, and targets foreign DNA for cleavage.

Figure 3

The three functions associated with CRISPR/Cas systems are shown. The conserved repeat segments of the CRISPR region are represented by black diamonds, while unique spacers are represented by colored rectangles.