1YQ6:
reference: The structure of the bacteriophage PRD1 spike sheds light on the evolution of viral capsid architecture., Merckel MC, Huiskonen JT, Bamford DH, Goldman A, Tuma R, Mol Cell. 2005 Apr 15;18(2):161-70. PMID: 15837420

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