3DAD:
reference: The human formin FHOD1 contains a bipartite structure of FH3 and GTPase-binding domains required for activation., Schulte A, Stolp B, Schonichen A, Pylypenko O, Rak A, Fackler OT, Geyer M, Structure. 2008 Sep 10;16(9):1313-23. PMID: 18786395

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