3QIL:
reference: Nuclear localization of clathrin involves a labile helix outside the trimerization domain., Ybe JA, Fontaine SN, Stone T, Nix J, Lin X, Mishra S, FEBS Lett. 2013 Jan 16;587(2):142-9. doi: 10.1016/j.febslet.2012.11.005. Epub, 2012 Nov 21. PMID: 23178717

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