5L2R:
reference: Crystal structure of an Fe-S cluster-containing fumarate hydratase enzyme from Leishmania major reveals a unique protein fold., Feliciano PR, Drennan CL, Nonato MC, Proc Natl Acad Sci U S A. 2016 Aug 30;113(35):9804-9. doi:, 10.1073/pnas.1605031113. Epub 2016 Aug 15. PMID: 27528683

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