a minimal domain, which contains actin binding sites and a means of coordinating a nucleus, must be identified. Figure 1: Model of Spir and Cappuccino cooperation in actin nucleation/polymerization.

Actin is a globular protein that is a major constituent of the cellular cytoskeleton. Actin can exist in monomeric form as G-actin (globular actin) or can form filaments (F-actin, filamentous ...