5HGO:
reference: HIV-1 uses dynamic capsid pores to import nucleotides and fuel encapsidated DNA synthesis., Jacques DA, McEwan WA, Hilditch L, Price AJ, Towers GJ, James LC, Nature. 2016 Aug 18;536(7616):349-53. PMID: 27509857

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