1IVL:
reference: The de novo design of an antibody combining site. Crystallographic analysis of the VL domain confirms the structural model., Essen LO, Skerra A, J Mol Biol. 1994 Apr 29;238(2):226-44. PMID: 8158652

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