4P9R:
reference: Speciation of a group I intron into a lariat capping ribozyme., Meyer M, Nielsen H, Olieric V, Roblin P, Johansen SD, Westhof E, Masquida B, Proc Natl Acad Sci U S A. 2014 May 12. PMID: 24821772

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