3MSV:
reference: The hypoxic regulator of sterol synthesis nro1 is a nuclear import adaptor., Yeh TL, Lee CY, Amzel LM, Espenshade PJ, Bianchet MA, Structure. 2011 Apr 13;19(4):503-14. PMID: 21481773

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