4NHH:
reference: Structural basis for enhanced HIV-1 neutralization by a dimeric immunoglobulin G form of the glycan-recognizing antibody 2G12., Wu Y, West AP Jr, Kim HJ, Thornton ME, Ward AB, Bjorkman PJ, Cell Rep. 2013 Dec 12;5(5):1443-55. doi: 10.1016/j.celrep.2013.11.015. Epub 2013 , Dec 5. PMID: 24316082

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