Putative microtubule-associated force-producing protein. Has a GTPase activity (By similarity). GTP + H2O = GDP + H(+) + phosphate Forms homodimer and may homooligomerize and heterooligomerize to form the phragmoplastin complex (By similarity). Binds to PHIP1 (PubMed:18621982). Microtubule-associated. May be due to a competing acceptor splice site. May be due to competing acceptor splice sites. Belongs to the TRAFAC class dynamin-like GTPase superfamily. Dynamin/Fzo/YdjA family.