2NY1:
reference: Structural definition of a conserved neutralization epitope on HIV-1 gp120., Zhou T, Xu L, Dey B, Hessell AJ, Van Ryk D, Xiang SH, Yang X, Zhang MY, Zwick MB, Arthos J, Burton DR, Dimitrov DS, Sodroski J, Wyatt R, Nabel GJ, Kwong PD, Nature. 2007 Feb 15;445(7129):732-7. PMID: 17301785

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