5NA2:
reference: Crystal Structure of the Full-Length Feline Immunodeficiency Virus Capsid Protein Shows an N-Terminal beta-Hairpin in the Absence of N-Terminal Proline., Folio C, Sierra N, Dujardin M, Alvarez G, Guillon C, Viruses. 2017 Nov 9;9(11). pii: v9110335. doi: 10.3390/v9110335. PMID: 29120364

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