3JA7:
reference: Cryo-EM structure of the bacteriophage T4 portal protein assembly at near-atomic resolution., Sun L, Zhang X, Gao S, Rao PA, Padilla-Sanchez V, Chen Z, Sun S, Xiang Y, Subramaniam S, Rao VB, Rossmann MG, Nat Commun. 2015 Jul 6;6:7548. doi: 10.1038/ncomms8548. PMID: 26144253

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