1SVL:
reference: Mechanisms of conformational change for a replicative hexameric helicase of SV40 large tumor antigen., Gai D, Zhao R, Li D, Finkielstein CV, Chen XS, Cell 2004 Oct 1;119(1):47-60. PMID: 15454080

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