RNA Base-Pairs, Stacking, etc.
Interactive basepair map with 3D fragment visualization for: 6K4S 
Base Pair Hydrogen Bonding Classification
Nucleic Acid Backbone Torsions
Base Pair Morphology Parameters
CRYSTAL STRUCTURE OF XCAS9 IN COMPLEX WITH SGRNA AND DNA (TGC PAM)
CRISPR-associated endonuclease Cas9/RNA Complex
Click to show/hide 3 nucleic acid sequences
Click to show/hide 1 protein sequences
Chen, W., Zhang, H., Zhang, Y., Wang, Y., Gan, J., Ji, Q.
Molecular basis for the PAM expansion and fidelity enhancement of an evolved Cas9 nuclease. 
Plos Biol., 17, pp. e3000496 - e3000496, 2019.
X-RAY DIFFRACTION
C 1 2 1
a = 177.464 b = 70.364 c = 188.899 (Ångstroms)
α = 90.0 β = 110.42 γ = 90.0 (degrees)
The structure was refined using the REFMAC program. The R value is 0.23934 for 36346 reflections in the resolution range 49.25 to 3.01 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))