Table 1. Residence time (in ns) of Na⁺ and K⁺ for different atoms in the nucleic acid structures.

	Na+(K+) residence times (ns)
B-DNA	N4	O2	O6	N2	N3	N7	O3′	O4′	OP1	OP2
	0.83(1.74)	–(1.82)	1.01(2.03)	–(1.84)	–(1.48)	0.25(1.37)	0.38(0.41)	–(1.74)	0.39(0.86)	0.35(0.80)
Z-DNA	O2	O6	N7	O3′(C)	O3′(G)	OP1(C)	OP1(G)	OP2(C)	OP2(G)
	–(0.30)	–(0.62)	–(0.68)	1.25(2.12)	–(0.51)	0.43(1.18)	2.26(4.75)	0.35(0.86)	0.65(1.84)
A-RNA	N4	O2	O6	N7	O2′	OP1	OP2
	0.43(2.45)	–(0.38)	0.54(1.47)	0.35(0.85)	–(0.52)	0.42(1.58)	0.47(1.56)
Z-RNA	O2	O6	O2′(C)	O2′(G)	O3′(C)	O3′(G)	OP1(C)	OP1(G)	OP2(C)	OP2(G)
	7.83(2.79)	–(0.91)	8.56(5.42)	–(0.71)	1.10(1.43)	–(0.67)	0.43(0.99)	1.21(1.92)	0.36(0.76)	0.60(1.82)

These results are for 0.4-M salt concentration.