1Z3H:
reference: The structure of the nuclear export receptor cse1 in its cytosolic state reveals a closed conformation incompatible with cargo binding., Cook A, Fernandez E, Lindner D, Ebert J, Schlenstedt G, Conti E, Mol Cell 2005 Apr 29;18(3):355-67. PMID: 15866177

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