4YN6:
reference: Structural Insights Reveal the Dynamics of the Repeating r(CAG) Transcript Found in Huntington's Disease (HD) and Spinocerebellar Ataxias (SCAs)., Tawani A, Kumar A, PLoS One. 2015 Jul 6;10(7):e0131788. doi: 10.1371/journal.pone.0131788., eCollection 2015. PMID: 26148061

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