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Cytoskeleton

The cytoskeleton is a dynamic, non-membrane-bound protein network essential for cellular architecture and function. Comprising actin microfilaments, intermediate filaments, and microtubules, it maintains cell shape, enables intracellular transport (via motor proteins), facilitates cell motility (e.g., in migration or cytokinesis), and provides structural resilience. Its continuous reorganization in response to cellular signals underpins critical processes like division, signaling, and adaptation. As a fundamental eukaryotic infrastructure, the cytoskeleton integrates mechanical and biochemical functions, making it indispensable for cellular integrity and activity. (98 words)