1FQD:
reference: Crystal structures of the maltodextrin/maltose-binding protein complexed with reduced oligosaccharides: flexibility of tertiary structure and ligand binding., Duan X, Hall JA, Nikaido H, Quiocho FA, J Mol Biol 2001 Mar 9;306(5):1115-26. PMID: 11237621

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