1HG4:
reference: The structure of the ultraspiracle ligand-binding domain reveals a nuclear receptor locked in an inactive conformation., Clayton GM, Peak-Chew SY, Evans RM, Schwabe JW, Proc Natl Acad Sci U S A 2001 Feb 13;98(4):1549-54. PMID: 11171988

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