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. 2010 Dec 13;107(52):22582–22586. doi: 10.1073/pnas.1012906108

Fig. 1.

Fig. 1.

CAG·CTG TNRs stimulate recombination at a 275-bp tandem repeat located at a distance of 6.3 kb on the E. coli chromosome. (A) Structure of the 275-bp tandem repeat of zeocin resistance gene sequences. Recombination or replication slippage between the two incomplete copies of the tandem duplication generates an intact zeocin resistance gene, as previously described (15). (B) Experimental system. CAG·CTG TNRs were inserted in the lacZ gene and a 275-bp tandem repeat of zeocin resistance gene sequences was inserted in the cynX gene at a distance of 6.3 kb on the E. coli chromosome (15, 16). (C) Recombination rates determined by fluctuation analysis as a function of the length of the CAG·CTG TNR array at lacZ. Error bars represent 95% confidence limits.