Table 1.

NMR and refinement statistics for the HBV HPRE stem-loop α structure (HSLAap)

NMR distance and dihedral constraints
Distance constraints	529
Hydrogen bond constraints	48
Total dihedral angle restraints	207
Structure statistics
Violations
Target function (Å2)	0.260 (0.00378)
Distance constraints > 0.1 Å	3.87 (0.96)
Max. distance constraint violation (Å)	0.18 (0.02)
Dihedral angle constraints	0 (0)
Max. dihedral angle violation (°)	1.71 (0.07)
AMBER physical energies (kcal/mol)	−161.68 (8.76)
Deviations from idealized geometry
Bond lengths (Å)	0.0047 (0.00006)
Bond angles (°)	1.4115 (0.01533)
Mean global r.m.s.d. (Å)
Heavy atoms	1.22 (0.40)
Pentaloop (residues 9–15)	0.74 (0.25)