Actomyosin

/ˌæktəˈmaɪəsɪn/ noun

Definition

A protein complex formed when actin and myosin interact, responsible for muscle contraction and cell movement.

Etymology

From 'actin' (protein) + 'myosin' (protein), both named from Greek roots. A 20th-century scientific term describing the molecular basis of muscular activity.

Kelly Says

Actomyosin is basically the molecular engine of your body—when actin and myosin slide past each other using ATP energy, that's what makes your muscles contract. Every movement you make, from running to smiling, comes down to this elegant molecular interaction.

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