RNA Base-Pairs, Stacking, etc.
Interactive basepair map with 3D fragment visualization for: 3BO3 
Symbolic WebFR3D search for:3BO3 
Geometric WebFR3D search for:3BO3 
Base Pair Hydrogen Bonding Classification
Nucleic Acid Backbone Torsions
A RELAXED ACTIVE SITE FOLLOWING EXON LIGATION BY A GROUP I INTRON
U1 small nuclear ribonucleoprotein A/RNA complex
, HAIRPIN LOOP
Click to show/hide 3 nucleic acid sequences
Click to show/hide 1 protein sequences
Lipchock, S.V., Strobel, S.A.
A relaxed active site after exon ligation by the group I intron 
Proc.Natl.Acad.Sci.Usa, 105, pp. 5699 - 5704, 2008.
X-RAY DIFFRACTION
P 41 2 2
a = 109.608 b = 109.608 c = 242.138 (Ångstroms)
α = 90.0 β = 90.0 γ = 90.0 (degrees)
The structure was refined using the REFMAC program. The R value is 0.284 for 21092 reflections in the resolution range 47.73 to 3.4 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
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))