Notes from NEET topper
Actin:
- Actin is a thin filamentous protein that is a key component of the cytoskeleton in eukaryotic cells.
- In muscle cells, actin forms long, helical filaments by polymerizing globular actin monomers (G-actin).
- These actin filaments are arranged in a repeating pattern within muscle fibers, called sarcomeres, which are the basic contractile units of muscles.
- Actin filaments have binding sites where myosin can attach during muscle contraction.
