1MWE:
reference: Structural evidence for a second sialic acid binding site in avian influenza virus neuraminidases., Varghese JN, Colman PM, van Donkelaar A, Blick TJ, Sahasrabudhe A, McKimm-Breschkin JL, Proc Natl Acad Sci U S A 1997 Oct 28;94(22):11808-12. PMID: 9342319

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