Table 2.

Comparison of the rms deviation between the two RNA models [2KBP—determined by NMR (model 1) and 3IBK determined by X-ray diffraction], and between the two crystal structures (1K8P–DNA quadruplex and 3IBK–RNA quadruplex)

	rmsd (Å)
	Whole model	Quartets only
3IBK v 1K8P (DNA)	0.990 (470 atoms)	0.539 (232 atoms)
3IBK v 2KBP (NMR)	2.971 (473 atoms)	1.011 (246 atoms)

The rms deviations are generated from structural alignments, which can be seen in Figure 1c and d