1AVP:
reference: Crystal structure of the human adenovirus proteinase with its 11 amino acid cofactor., Ding J, McGrath WJ, Sweet RM, Mangel WF, EMBO J 1996 Apr 15;15(8):1778-83. PMID: 8617222

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