6CWT:
reference: Structures of Hepatitis B Virus Core- and e-Antigen Immune Complexes Suggest Multi-point Inhibition., Eren E, Watts NR, Dearborn AD, Palmer IW, Kaufman JD, Steven AC, Wingfield PT, Structure. 2018 Jul 17. pii: S0969-2126(18)30244-2. doi:, 10.1016/j.str.2018.06.012. PMID: 30100358

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