3M8L:
reference: Conformational changes in the capsid of a calicivirus upon interaction with its functional receptor., Ossiboff RJ, Zhou Y, Lightfoot PJ, Prasad BV, Parker JS, J Virol. 2010 Jun;84(11):5550-64. Epub 2010 Mar 31. PMID: 20357100

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