| 4BKK: reference: The respiratory syncytial virus nucleoprotein-RNA complex forms a left-handed helical nucleocapsid., Bakker SE, Duquerroy S, Galloux M, Loney C, Conner E, Eleouet JF, Rey FA, Bhella D, J Gen Virol. 2013 Aug;94(Pt 8):1734-8. doi: 10.1099/vir.0.053025-0. Epub 2013 May, 15. PMID: 23677789 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).