Question

actin filament from which part​

Answer 1

Actin Filaments Arise from Nucleation Sites Usually in the Cell Cortex. Actin filaments are present in most cells but are especially abundant in muscle cells. The monomer is a globular protein called G-actin, with a molecular weight of 41,800 Da. G-actin polymerizes noncovalently into actin filaments, called F-actin.