The C terminus of formin FMNL3 accelerates actin polymerization and contains a WH2 domain-like sequence that binds both monomers and filament barbed ends.

肌动蛋白 FMNL3 的 C 末端可加速肌动蛋白聚合，并含有 WH2 结构域样序列，该序列可结合单体和丝状体的有刺末端