Figure 5.

IP of the DNA oligomers as a function of the number N of base pairs, where a guanine is embedded in the center of the contiguous adenines or thymines. The symbols and lines are the same as those in Figure 1b. (a) N = 1, 2, 3, 4, 5, and 6 are for d(5′-G-3′)·d(3′-C-5′), d(5′-AG-3′)·d(3′-TC-5′), d(5′-AGA-3′)·d(3′-TCT-5′), d(5′-AAGA-3′)·d(3′-TTCT-5′), d(5′-AAGAA-3′)·d(3′-TTCTT-5′), and d(5′-AAAGAA-3′)·d(3′-TTTCTT-5′), respectively. (b) Same as in Figure 5a except that A and T are exchanged in the sequences of the DNA oligomers.