2QBY:
reference: Replication origin recognition and deformation by a heterodimeric archaeal Orc1 complex., Dueber EL, Corn JE, Bell SD, Berger JM, Science. 2007 Aug 31;317(5842):1210-3. PMID: 17761879

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