5XGO:
reference: The Crystal Structure of a Maxi/Mini-Ferritin Chimera Reveals Guiding Principles for the Assembly of Protein Cages., Cornell TA, Srivastava Y, Jauch R, Fan R, Orner BP, Biochemistry. 2017 Aug 1;56(30):3894-3899. doi: 10.1021/acs.biochem.7b00312. Epub, 2017 Jul 21. PMID: 28682051

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