INF2 Proteins and Enzymes

Actin filaments grow only when actin monomers have access to the fast-growing barbed end of the filament. The geometry of the filament network depends on the actions of the ARP2/3 complex (MIM 604221) and members of the formin family, such as INF2. The ARP2/3 complex binds to the sides of preexisting filaments and nucleates filaments whose barbed ends are quickly blocked by capping proteins, producing brush-like structures, such as those found at the leading edges of crawling cells. In ...