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Isolated
from Acanthamoeba castellanii (Ueno
& Korn, 1986).
Actually a dimer composed of two 55kDa subunits, each subunit binds one actin
monomer within the filament. No effect on the viscosity of actin filaments
and slows polymerization of ADP but not ATP actin suggesting weak sequestering
activity of ADP-monomers? 110kD protein is enriched in the cortex
and the function of the protein may be to modulate the interaction of actin and
myosin as the mysoin ATPase is inhibited by the protein. 110kDa protein
enhanced the sedimentation of actin. Perhaps a caldsemon or tropomysoin like
protein? No sequence data available.
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