5Z0W:
reference: Mechanism of HIV-1 Resistance to an Electronically Constrained alpha-Helical Peptide Membrane Fusion Inhibitor., Wu X, Liu Z, Ding X, Yu D, Wei H, Qin B, Zhu Y, Chong H, Cui S, He Y, J Virol. 2018 Jan 10. pii: JVI.02044-17. doi: 10.1128/JVI.02044-17. PMID: 29321334

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