1AI1:
reference: Structure-based design of a constrained peptide mimic of the HIV-1 V3 loop neutralization site., Ghiara JB, Ferguson DC, Satterthwait AC, Dyson HJ, Wilson IA, J Mol Biol 1997 Feb 14;266(1):31-9. PMID: 9054968

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