1SCL:
reference: The conformation of the sarcin/ricin loop from 28S ribosomal RNA., Szewczak AA, Moore PB, Chang YL, Wool IG, Proc Natl Acad Sci U S A. 1993 Oct 15;90(20):9581-5. PMID: 8415744

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