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[mass noun] A protein which forms (together with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cell.
put on, present, produce, giveView synonyms
- ‘Striated muscle contraction is regulated by a protein complex bound to actin.’
- ‘Rabbit skeletal muscle actin was prepared as described and subjected to gel filtration.’
- ‘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.’
- ‘Muscle contraction results from the cyclic interaction of the myosin head with actin.’
1940: from Greek aktis, aktin- ray + -in.
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