2G3M:
reference: Structure of the Sulfolobus solfataricus alpha-Glucosidase: Implications for Domain Conservation and Substrate Recognition in GH31., Ernst HA, Lo Leggio L, Willemoes M, Leonard G, Blum P, Larsen S, J Mol Biol. 2006 May 12;358(4):1106-24. Epub 2006 Mar 13. PMID: 16580018

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