1TRD:
reference: Structures of the "open" and "closed" state of trypanosomal triosephosphate isomerase, as observed in a new crystal form: implications for the reaction mechanism., Noble ME, Zeelen JP, Wierenga RK, Proteins 1993 Aug;16(4):311-26. PMID: 8356028

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