1IL1:
reference: Structure of an anti-HIV monoclonal Fab antibody fragment specific to a gp120 C-4 region peptide., Berry MB, Johnson KA, Radding W, Fung M, Liou R, Phillips GN Jr, Proteins 2001 Nov 15;45(3):281-2. PMID: 11599031

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