4PY8:
reference: Alternative Recognition of the Conserved Stem-Epitope in Influenza A Hemagglutinin by a VH3-30-Encoded Heterosubtypic Antibody., Wyrzucki A, Dreyfus C, Kohler I, Steck M, Wilson IA, Hangartner L, J Virol. 2014 Apr 9. PMID: 24719426

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