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. 2009 Dec 2;38(4):1294–1303. doi: 10.1093/nar/gkp1092

Figure 4.

Figure 4.

DNA nicking activity of top-strand nicking BtsCI variant. Two-fold serial dilutions of the cell extract of BtsCI nicking variant E128F were incubated with pUC19 as described in ‘Materials and Methods’ section. The cleavage products were analyzed on a 1% agarose gel. OC, open circle; SC, supercoiled.