2OQ3:
reference: Solution structure of the cryptic mannitol-specific phosphotransferase enzyme IIA CmtB from Escherichia coli., Yu C, Li Y, Xia B, Jin C, Biochem Biophys Res Commun. 2007 Nov 3;362(4):1001-6. Epub 2007 Aug 27. PMID: 17803963

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