| 2WPG: reference: The apo structure of sucrose hydrolase from Xanthomonas campestris pv. campestris shows an open active-site groove., Champion E, Remaud-Simeon M, Skov LK, Kastrup JS, Gajhede M, Mirza O, Acta Crystallogr D Biol Crystallogr. 2009 Dec;65(Pt 12):1309-14. Epub 2009 Nov, 17. PMID: 19966417 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).