3OAU:
reference: Antibody 2G12 recognizes di-mannose equivalently in domain- and nondomain-exchanged forms but only binds the HIV-1 glycan shield if domain exchanged., Doores KJ, Fulton Z, Huber M, Wilson IA, Burton DR, J Virol. 2010 Oct;84(20):10690-9. Epub 2010 Aug 11. PMID: 20702629

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