3ZN3:
reference: The Four Canonical TPR Subunits of Human APC/C Form Related Homo-Dimeric Structures and Stack in Parallel to Form a TPR Suprahelix., Zhang Z, Chang L, Yang J, Conin N, Kulkarni K, Barford D, J Mol Biol. 2013 Apr 11. pii: S0022-2836(13)00233-7. doi:, 10.1016/j.jmb.2013.04.004. PMID: 23583778

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