5XWG:
reference: Crystal structure of a novel RNA motif that allows for precise positioning of a single metal ion., Kanazawa H, Kondo J, J Inorg Biochem. 2017 Nov;176:140-143. doi: 10.1016/j.jinorgbio.2017.08.029. Epub, 2017 Sep 21. PMID: 28898762

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