Cytochalasin d of monomers at of existing filaments. when the concentration of g-actin in the cytosol is the critical concentration, the loss of monomers at of existing filaments eventually results in their shortening. this occurs despite the pool of available g-actin in the cytosol.

Cytochalasin D prevents the addition of monomers at plus ends of existing filaments. When the concentration of G-actin in the cytosol is below the critical concentration, the loss of monomers at minus ends of existing filaments eventually results in their shortening. This occurs despite the pool of available G-actin in the cytosol.

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