What Is The Protein Filament That Binds And Stabilizes F Actin Strands?

What Is The Protein Filament That Binds And Stabilizes F Actin Strands? Tropomyosin also binds to F-actin in smooth muscle and in non-muscle cells and stabilizes and regulates the filaments there in the absence of troponin6. What is the monomer of F actin? Microfilaments are composed of actin protein subunits G-actin also has one ATP