5YLZ:
reference: Structure of the Post-catalytic Spliceosome from Saccharomyces cerevisiae., Bai R, Yan C, Wan R, Lei J, Shi Y, Cell. 2017 Dec 14;171(7):1589-1598.e8. doi: 10.1016/j.cell.2017.10.038. Epub 2017, Nov 16. PMID: 29153833

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