| 1HGD: reference: Binding of influenza virus hemagglutinin to analogs of its cell-surface receptor, sialic acid: analysis by proton nuclear magnetic resonance spectroscopy and X-ray crystallography., Sauter NK, Hanson JE, Glick GD, Brown JH, Crowther RL, Park SJ, Skehel JJ, Wiley DC, Biochemistry 1992 Oct 13;31(40):9609-21. PMID: 1327122 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).