5E66:
reference: An Open Receptor-Binding Cavity of Hemagglutinin-Esterase-Fusion Glycoprotein from Newly-Identified Influenza D Virus: Basis for Its Broad Cell Tropism., Song H, Qi J, Khedri Z, Diaz S, Yu H, Chen X, Varki A, Shi Y, Gao GF, PLoS Pathog. 2016 Jan 27;12(1):e1005411. doi: 10.1371/journal.ppat.1005411., eCollection 2016 Jan. PMID: 26816272

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