2L3E:
reference: Structurally conserved five nucleotide bulge determines the overall topology of the core domain of human telomerase RNA., Zhang Q, Kim NK, Peterson RD, Wang Z, Feigon J, Proc Natl Acad Sci U S A. 2010 Nov 2;107(44):18761-8. Epub 2010 Oct 21. PMID: 20966348

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