5IY0:
reference: Structure of a double hexamer of the Pyrococcus furiosus minichromosome maintenance protein N-terminal domain., Meagher M, Enemark EJ, Acta Crystallogr F Struct Biol Commun. 2016 Jul 1;72(Pt 7):545-51. doi:, 10.1107/S2053230X1600858X. Epub 2016 Jun 22. PMID: 27380371

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