4J5T:
reference: Specificity of Processing alpha-Glucosidase I Is Guided by the Substrate Conformation: CRYSTALLOGRAPHIC AND IN SILICO STUDIES., Barker MK, Rose DR, J Biol Chem. 2013 May 10;288(19):13563-74. doi: 10.1074/jbc.M113.460436. Epub, 2013 Mar 27. PMID: 23536181

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