Table 2.

T_m values in °C for duplexes with antiparallel and parallel orientations of strands

System	Linkage	x- TTT TAA ATA TAA TAA T - y	x- TTT TAA ATA TAA TAA T -y
		y- AAA ATT TAT ATT ATT A - x	x- AAA ATT TAT ATT ATT A -y
DNA	x = 5′ → y = 3′	28.5	16.5
homo-DNA	x = 6′ → y = 4′	67.0	—
pRNA	x = 4′ → y = 2′	60.0	—
		x- UUU UAA AUA UAA UAA U - y	x- UUU UAA AUA UAA UAA U -y
		y- AAA AUU UAU AUU AUU A - x	x- AAA AUU UAU AUU AUU A -y
RNA	x = 5′ → y = 3′	28.4	—
2′-OMe-RNA	x = 5′ → y = 3′	39.8	—