RNA Base-Pairs, Stacking, etc.
Interactive basepair map with 3D fragment visualization for: 4WZJ 
Base Pair Hydrogen Bonding Classification
Nucleic Acid Backbone Torsions
Base Pair Morphology Parameters
SPLICEOSOMAL U4 SNRNP CORE DOMAIN
SM D3
SM B
SM D1
SM D2
SM F
SM E
SM G/RNA Complex
A DOUBLE HELIX
Click to show/hide 1 nucleic acid sequences
Click to show/hide 7 protein sequences
Leung, A.K., Nagai, K., Li, J.
Structure of the spliceosomal U4 snRNP core domain and its implication for snRNP biogenesis. 
Nature, 473, pp. 536 - 539, 2011.
X-RAY DIFFRACTION
P 31
a = 248.01 b = 248.01 c = 251.94 (Ångstroms)
α = 90.0 β = 90.0 γ = 120.0 (degrees)
The structure was refined using the REFMAC program. The R value is 0.17899 for 166779 reflections in the resolution range 66.154 to 3.6 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)
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))