1IKA:
reference: Structure of isocitrate dehydrogenase with alpha-ketoglutarate at 2.7-A resolution: conformational changes induced by decarboxylation of isocitrate., Stoddard BL, Koshland DE Jr, Biochemistry 1993 Sep 14;32(36):9317-22. PMID: 8369301

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