2W8Y:
reference: The X-ray structure of RU486 bound to the progesterone receptor in a destabilized agonistic conformation., Raaijmakers HC, Versteegh JE, Uitdehaag JC, J Biol Chem. 2009 Apr 16. PMID: 19372222

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