3CGI:
reference: Structure of the PduU shell protein from the Pdu microcompartment of Salmonella., Crowley CS, Sawaya MR, Bobik TA, Yeates TO, Structure. 2008 Sep 10;16(9):1324-32. PMID: 18786396

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