4KF8:
reference: Scaffold nucleoporins Nup188 and Nup192 share structural and functional properties with nuclear transport receptors., Andersen KR, Onischenko E, Tang JH, Kumar P, Chen JZ, Ulrich A, Liphardt JT, Weis K, Schwartz TU, Elife. 2013 Jun 11;2:e00745. doi: 10.7554/eLife.00745. Print 2013. PMID: 23795296

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