May organize microtubules by mediating spindle positioning and movement in the budding process. Potential target of the RHO family members (By similarity). Interacts with profilin at the FH1 domain. The DAD domain regulates activation via by an autoinhibitory interaction with the GBD/FH3 domain. This autoinhibition is released upon competitive binding of an activated GTPase. The release of DAD allows the FH2 domain to then nucleate and elongate nonbranched actin filaments (By similarity). Present with 259 molecules/cell in log phase SD medium. Belongs to the formin homology family. BNI1 subfamily.