2K66:
reference: NMR structure of the 5' splice site in the group IIB intron Sc.ai5gamma--conformational requirements for exon-intron recognition., Kruschel D, Skilandat M, Sigel RK, RNA. 2014 Mar;20(3):295-307. doi: 10.1261/rna.041137.113. Epub 2014 Jan 21. PMID: 24448450

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