Definition of actin in English:
A protein that forms (together with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cells.
- Muscle contraction is dependent on two proteins, actin and myosin.
- As the cells round up, actin and myosin moieties are being redistributed underneath the plasma membrane.
- Striated muscle contraction is regulated by a protein complex bound to actin.
Definition of actin in:
- British & World English dictionary
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