6Z3T:
reference: Structure of the Inhibited State of the Sec Translocon., Gerard SF, Hall BS, Zaki AM, Corfield KA, Mayerhofer PU, Costa C, Whelligan DK, Biggin PC, Simmonds RE, Higgins MK, Mol Cell. 2020 Aug 6;79(3):406-415.e7. doi: 10.1016/j.molcel.2020.06.013. Epub, 2020 Jul 9. PMID: 32692975

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