5JR5:
reference: Archaea S-layer nanotube from a "black smoker" in complex with cyclo-octasulfur (S8 ) rings., McDougall M, Francisco O, Harder-Viddal C, Roshko R, Meier M, Stetefeld J, Proteins. 2017 Sep 14. doi: 10.1002/prot.25385. PMID: 28905430

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