Tropomyosin;calcium ions
protein that makes up thin myofilament
The myosin myofilament pulls on the actin myofilament during muscle contraction. This interaction, known as the sliding filament theory, results in the shortening of the sarcomere and muscle contraction.
myofilament myofibril myofiber fascicle muscle
Actin (thin myofilament), myosin (thick myofilament), calcium, and ATP (energy).
The thin myofilament of skeletal muscles is made of the globular protein called actin.
TROPOMYOSIN MOLECULES ( troponin hold the tropomyosin in place)
The protein that makes up the thick myofilament in muscle cells is called myosin. Myosin is a motor protein that plays a key role in muscle contraction by interacting with actin, the protein in the thin myofilament.
myofilament
Myosin
muscle
Myosin