6GSH:
reference: Calicivirus VP2 forms a portal-like assembly following receptor engagement., Conley MJ, McElwee M, Azmi L, Gabrielsen M, Byron O, Goodfellow IG, Bhella D, Nature. 2019 Jan;565(7739):377-381. doi: 10.1038/s41586-018-0852-1. Epub 2019 Jan, 9. PMID: 30626974

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