1LKE:
reference: Structural mechanism of specific ligand recognition by a lipocalin tailored for the complexation of digoxigenin., Korndorfer IP, Schlehuber S, Skerra A, J Mol Biol 2003 Jul 4;330(2):385-96. PMID: 12823976

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