1X9K:
reference: Conformational Heterogeneity at Position U37 of an All-RNA Hairpin Ribozyme with Implications for Metal Binding and the Catalytic Structure of the S-Turn(,)., Alam S, Grum-Tokars V, Krucinska J, Kundracik ML, Wedekind JE, Biochemistry 2005 Nov 8;44(44):14396-408. PMID: 16262240

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