Table 1.

Interhelical Angle Between SLI and SLV

	Original Ensemble	Simulation Average, +Mg2+	Simulation Average, −Mg2+
Interhelical angle (degree)	145 ± 11	126 ± 11	130 ± 11

Vectors describing the helical axis are determined by the centers of mass of the U-turn residues (SLI: 9–12, SLV: 31–34) and terminal base pair (SLI: 1 and 21, SLV: 23 and 43) of each stem loop. Values are averages over 10 simulations with errors reported as SDs.