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. Author manuscript; available in PMC: 2020 Jan 8.
Published in final edited form as: Nat Struct Mol Biol. 2019 Jul 8;26(8):679–685. doi: 10.1038/s41594-019-0258-2
Target strand 5’-CCAGTGCGTAGGCGCATAAAGATGAGACGCTGGCGATTAG-3’
Non-target strand 5’-CTAATCGCCAGCGTCTCATCTTTATGCGCCTACGCACTGG-3’