2HBH:
reference: Crystal structure of the vitamin D nuclear receptor ligand binding domain in complex with a locked side chain analog of calcitriol., Rochel N, Hourai S, Perez-Garcia X, Rumbo A, Mourino A, Moras D, Arch Biochem Biophys. 2007 Apr 15;460(2):172-6. Epub 2007 Feb 20. PMID: 17346665

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