1TBK:
reference: Nuclear magnetic resonance structure of the varkud satellite ribozyme stem-loop v RNA and magnesium-ion binding from chemical-shift mapping(,)., Campbell DO, Legault P, Biochemistry 2005 Mar 22;44(11):4157-70. PMID: 15766243

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