3GR9:
reference: Two site-directed mutations are required for the conversion of a sugar dehydratase into an aminotransferase., Cook PD, Kubiak RL, Toomey DP, Holden HM, Biochemistry. 2009 Jun 16;48(23):5246-53. PMID: 19402712

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