4UD1:
reference: Structural characterization of the N-terminal part of the MERS-CoV nucleocapsid by X-ray diffraction and small-angle X-ray scattering., Papageorgiou N, Lichiere J, Baklouti A, Ferron F, Sevajol M, Canard B, Coutard B, Acta Crystallogr D Struct Biol. 2016 Feb;72(Pt 2):192-202. doi:, 10.1107/S2059798315024328. Epub 2016 Jan 22. PMID: 26894667

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