1NMC:
reference: Three-dimensional structures of single-chain Fv-neuraminidase complexes., Malby RL, McCoy AJ, Kortt AA, Hudson PJ, Colman PM, J Mol Biol 1998 Jun 19;279(4):901-10. PMID: 9642070

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