1JBC:
reference: Atomic resolution structure of concanavalin A at 120 K., Parkin S, Rupp B, Hope H, Acta Crystallogr D Biol Crystallogr. 1996 Nov 1;52(Pt 6):1161-8. PMID: 15299577

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