RNA Base-Pairs, Stacking, etc.
Interactive basepair map with 3D fragment visualization for: 1M5O 
Base Pair Hydrogen Bonding Classification
Nucleic Acid Backbone Torsions
Base Pair Morphology Parameters
TRANSITION STATE STABILIZATION BY A CATALYTIC RNA
DOUBLE HELIX, LOOP, BULGES, FLIPPED-OUT BASES
Click to show/hide 2 nucleic acid sequences
Click to show/hide 1 protein sequences
Rupert, P.B., Massey, A.P., Sigurdsson, S.T., Ferre-D'Amare, A.R.
Transition state stabilization by a catalytic RNA 
Science, 298, pp. 1421 - 1424, 2002.
X-RAY DIFFRACTION
C 1 2 1
a = 259.38 b = 44.22 c = 102.5 (Ångstroms)
α = 90.0 β = 106.3 γ = 90.0 (degrees)
The structure was refined using the CNS program. The R value is 0.229 for 57194 reflections in the resolution range 20.0 to 2.2 Ångstroms with Fobs > 0.0 sigma(Fobs) and with I > 0.0 sigma(I)
Asymmetric Unit coordinates (pdb format, Unix compressed(.gz))
Asymmetric Unit coordinates (cif format, Unix compressed(.gz))
Biological Assembly coordinates (pdb format) 1 2
Structure Factors (cif format)
Coordinates (pdb format, Unix compressed(.gz))
Coordinates (cif format, Unix compressed(.gz))
NMR Restraints (cif format, Unix compressed(.gz))
XML | Complete with coordinates (xml format, GNU compressed(.gz))