GO_term: GO:0005884   

GO:0005884	Definition	A two-stranded helical polymer of the protein actin. Actin filaments are a major component of the contractile apparatus of skeletal muscle and the microfilaments of the cytoskeleton of eukaryotic cells. The filaments, comprising polymerized globular actin molecules, appear as flexible structures with a diameter of 5-9 nm. They are organized into a variety of linear bundles, two-dimensional networks, and three dimensional gels. In the cytoskeleton they are most highly concentrated in the cortex of the cell just beneath the plasma membrane.
	Term	actin filament
	Type	Cellular_component
	Child	Instance	GO:0042643
	Parent	Component_of	GO:0015629
	Attributes_of	Motif	INTERPRO:IPR004001
		Gene (8)
		CDS (9)
		Index	Ancestor (23)
			Descendent	GO:0005884
				GO:0042643

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