1Y39:
reference: Coevolution of protein and RNA structures within a highly conserved ribosomal domain., Dunstan MS, Guhathakurta D, Draper DE, Conn GL, Chem Biol 2005 Feb;12(2):201-6. PMID: 15734647

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