1N55:
reference: Crystal structure of triosephosphate isomerase complexed with 2-phosphoglycolate at 0.83-A resolution., Kursula I, Wierenga RK, J Biol Chem 2003 Mar 14;278(11):9544-51. PMID: 12522213

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