1. Plural of actin; a globular protein that forms thin filaments in muscle cells and is essential for muscle contraction and cell movement.
Usage: biology; biochemistry; technical

Examples

• Actins and myosins work together to enable muscle contraction.
• The thin filaments of muscle tissue are composed primarily of actins.
• Researchers studied how actins interact with other proteins in the cytoskeleton.
• Actins play a crucial role in cell division and movement.
• The structure of actins has been extensively analyzed using electron microscopy.