4D7C:
reference: The Olfactomedin Domain from Gliomedin is a beta-Propeller with Unique Structural Properties., Han H, Kursula P, J Biol Chem. 2014 Dec 17. pii: jbc.M114.627547. PMID: 25525261

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