5OBA:
reference: Engineered ferritin for lanthanide binding., Calisti L, Trabuco MC, Boffi A, Testi C, Montemiglio LC, des Georges A, Benni I, Ilari A, Taciak B, Bialasek M, Rygiel T, Krol M, Baiocco P, Bonamore A, PLoS One. 2018 Aug 13;13(8):e0201859. doi: 10.1371/journal.pone.0201859., eCollection 2018. PMID: 30102720

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