4X7F:
reference: Nanobody binding to a conserved epitope promoted human norovirus particle disassembly., Koromyslova AD, Hansman GS, J Virol. 2014 Dec 17. pii: JVI.03176-14. PMID: 25520510

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