3J9D:
reference: Atomic model of a nonenveloped virus reveals pH sensors for a coordinated process of cell entry., Zhang X, Patel A, Celma CC, Yu X, Roy P, Zhou ZH, Nat Struct Mol Biol. 2015 Dec 7. doi: 10.1038/nsmb.3134. PMID: 26641711

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