1F8X:
reference: Crystal structures of nucleoside 2-deoxyribosyltransferase in native and ligand-bound forms reveal architecture of the active site., Armstrong SR, Cook WJ, Short SA, Ealick SE, Structure 1996 Jan 15;4(1):97-107. PMID: 8805514

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