5KI6:
reference: Structure-Guided Control of siRNA Off-Target Effects., Suter SR, Sheu-Gruttadauria J, Schirle NT, Valenzuela R, Ball-Jones AA, Onizuka K, MacRae IJ, Beal PA, J Am Chem Soc. 2016 Jul 20;138(28):8667-9. doi: 10.1021/jacs.6b06137. Epub 2016, Jul 12. PMID: 27387838

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).