+Actin is a globular [protein](/wiki/protein) crucial to all eukaryotic cells, assembling into [microfilaments](/wiki/microfilament). These dynamic structures are fundamental for maintaining cell shape, enabling cellular [motility](/wiki/motility), and driving muscle contraction.
+## See also
+- [Myosin](/wiki/myosin)
+- [Cytoskeleton](/wiki/cytoskeleton)
+- [Cell](/wiki/cell)
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