1NT4:
reference: Functional insights revealed by the crystal structures of Escherichia coli glucose-1-phosphatase., Lee DC, Cottrill MA, Forsberg CW, Jia Z, J Biol Chem 2003 Aug 15;278(33):31412-8. Epub 2003 Jun 1. PMID: 12782623

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