1DQ6:
reference: The structural features of concanavalin A governing non-proline peptide isomerization., Bouckaert J, Dewallef Y, Poortmans F, Wyns L, Loris R, J Biol Chem 2000 Jun 30;275(26):19778-87. PMID: 10748006

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