Abstract
We analyzed sequences of newly inserted repeats in an Escherichia coli CRISPR (clustered regularly interspaced short palindromic repeats) array in vivo and showed that a base previously thought to belong to the repeat is actually derived from a protospacer. Based on further experimental results, we propose to use the term duplicon for a repeated sequence in a CRISPR array that serves as a template for a new duplicon. Our findings suggest the possibility of redrawing the borders between repeats, spacers, and protospacer adjacent motifs.
Original language | English |
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Pages (from-to) | 14-16 |
Number of pages | 3 |
Journal | Journal of Molecular Biology |
Volume | 423 |
Issue number | 1 |
DOIs | |
State | Published - 12 Oct 2012 |
Keywords
- CRISPR adaptation
- DNA template
- bacteriophage
- defense mechanism