4IOT:
reference: Triosephosphate isomerase is a common crystallization contaminant of soluble His-tagged proteins produced in Escherichia coli., Kozlov G, Vinaik R, Gehring K, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 May;69(Pt 5):499-502. doi:, 10.1107/S1744309113010841. Epub 2013 Apr 30. PMID: 23695562

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