RNA Base-Pairs, Stacking, etc.
Interactive basepair map with 3D fragment visualization for: 2OZB 
Base Pair Hydrogen Bonding Classification
Nucleic Acid Backbone Torsions
Base Pair Morphology Parameters
STRUCTURE OF A HUMAN PRP31-15.5K-U4 SNRNA COMPLEX
U4/U6.U5 tri-snRNP 15.5 kDa protein
U4/U6 small nuclear ribonucleoprotein Prp31/RNA Complex
DOUBLE HELIX, DOUBLE HELIX, BULGE LOOP, HAIRPIN LOOP
Click to show/hide 1 nucleic acid sequences
Click to show/hide 2 protein sequences
Liu, S., Li, P., Dybkov, O., Nottrott, S., Hartmuth, K., Luhrmann, R., Carlomagno, T., Wahl, M.C.
Binding of the human Prp31 Nop domain to a composite RNA-protein platform in U4 snRNP. 
Science, 316, pp. 115 - 120, 2007.
X-RAY DIFFRACTION
P 21 21 21
a = 83.555 b = 99.896 c = 169.645 (Ångstroms)
α = 90.0 β = 90.0 γ = 90.0 (degrees)
The structure was refined using the REFMAC program. The R value is 0.20784 for 42029 reflections in the resolution range 30.0 to 2.6 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))