1S2O:
reference: The structure of a cyanobacterial sucrose-phosphatase reveals the sugar tongs that release free sucrose in the cell., Fieulaine S, Lunn JE, Borel F, Ferrer JL, Plant Cell 2005 Jul;17(7):2049-58. Epub 2005 Jun 3. PMID: 15937230

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