What Are Actin Filaments?
Microfilaments are filaments formed by helical aggregation of actin molecules, also known as actin filaments. They form a cytoskeleton with microtubules and intermediate fibers. A protein with a molecular weight of about 42 kDa is also a highly conserved protein, which will not exceed 20% due to species differences (such as algae and humans). Microfilaments play important roles in many cell functions such as cell attachment, spreading, movement, endocytosis, and cell division. 
- Microfilaments can be assembled and disassembled. When the monomer is bound
- It can cut the microfilament fiber, and bind to the microfilament end to inhibit the addition of actin to the microfilament fiber, specifically inhibit the microfilament function. 
- It can specifically bind to the microfilament, which stabilizes the microfilament fiber and inhibits its function. Fluorescently labeled ghost pen cyclopeptide can specifically display microfilaments. 
- Ghost pen cyclic peptide staining of microfilaments (6 photos)