1SOY:
reference: Solution Structure of the Bacterial Frataxin Ortholog, CyaY; Mapping the Iron Binding Sites., Nair M, Adinolfi S, Pastore C, Kelly G, Temussi P, Pastore A, Structure (Camb) 2004 Nov;12(11):2037-48. PMID: 15530368

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