Notes from NEET topper

Structure of Actin and Myosin:

  • Actin and myosin are protein filaments found in muscle cells.

  • Actin is a thin filament composed of globular actin (G-actin) subunits, which polymerize to form long, helical actin filaments.

  • Myosin is a thick filament consisting of myosin molecules with elongated tail and globular head regions.