TABLE 1.

Sequences of DNA substrates

“T” and “C” denote Cy3 attached to a 5-C6-amino-2′-deoxythymidine and 2′,3′-dideoxycytidine, respectively. Mismatched bases are indicated in red. All template strands except the one in A-1 also contained biotin on their 3′-ends for surface immobilization.