1ADU:
reference: Alternative arrangements of the protein chain are possible for the adenovirus single-stranded DNA binding protein., Kanellopoulos PN, Tsernoglou D, van der Vliet PC, Tucker PA, J Mol Biol 1996 Mar 22;257(1):1-8. PMID: 8632448

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