1IF2:
reference: Structural determinants for ligand binding and catalysis of triosephosphate isomerase., Kursula I, Partanen S, Lambeir AM, Antonov DM, Augustyns K, Wierenga RK, Eur J Biochem 2001 Oct;268(19):5189-96. PMID: 11589711

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