3ODT:
reference: WD40 repeat propellers define a ubiquitin-binding domain that regulates turnover of F box proteins., Pashkova N, Gakhar L, Winistorfer SC, Yu L, Ramaswamy S, Piper RC, Mol Cell. 2010 Nov 12;40(3):433-43. PMID: 21070969

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