5KZY:
reference: Cellular Cholesterol Directly Activates Smoothened in Hedgehog Signaling., Huang P, Nedelcu D, Watanabe M, Jao C, Kim Y, Liu J, Salic A, Cell. 2016 Aug 25;166(5):1176-1187.e14. doi: 10.1016/j.cell.2016.08.003. Epub, 2016 Aug 18. PMID: 27545348

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