EOG8K3PFW GO:0005198 2/5 structural molecule activity molecular_function "The action of a molecule that contributes to the structural integrity of a complex or assembly within or outside a cell." [GOC:mah] EOG8K3PFW GO:0005882 2/5 intermediate filament cellular_component "A cytoskeletal structure that forms a distinct elongated structure, characteristically 10 nm in diameter, that occurs in the cytoplasm of eukaryotic cells. Intermediate filaments form a fibrous system, composed of chemically heterogeneous subunits and involved in mechanically integrating the various components of the cytoplasmic space. Intermediate filaments may be divided into five chemically distinct classes: Type I, acidic keratins; Type II, basic keratins; Type III, including desmin, vimentin and others; Type IV, neurofilaments and related filaments; and Type V, lamins." [http://www.cytochemistry.net/Cell-biology/intermediate_filaments.htm, ISBN:0198506732]