During treadmilling,actin subunits add:
A)predominantly to filament (+)ends.
B)predominantly to filament (−)ends.
C)equally to both filament ends.
D)along the length of filaments.

Question

Quizplus · Accepted Answer

During treadmilling, actin subunits are predominantly added to the filament (+)ends, which is also the site of rapid polymerization. This results in the elongation of the filament from the (+)end while the (-)end undergoes depolymerization, leading to the observed directional movement of the actin cytoskeleton.

During Treadmilling,actin Subunits Add