2AQC:
reference: The Cbf5-Nop10 complex is a molecular bracket that organizes box H/ACA RNPs., Hamma T, Reichow SL, Varani G, Ferre-D'Amare AR, Nat Struct Mol Biol. 2005 Dec;12(12):1101-7. Epub 2005 Nov 15. PMID: 16286935

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