5TZS:
reference: Architecture of the yeast small subunit processome., Chaker-Margot M, Barandun J, Hunziker M, Klinge S, Science. 2017 Jan 13;355(6321). pii: eaal1880. doi: 10.1126/science.aal1880. Epub, 2016 Dec 15. PMID: 27980088

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