3OBV:
reference: Crystal structure of the Formin mDia1 in autoinhibited conformation., Otomo T, Tomchick DR, Otomo C, Machius M, Rosen MK, PLoS One. 2010 Sep 30;5(9). pii: e12896. PMID: 20927343

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