Any microtubule in the cytoplasm of a cell.

early endosome to late endosome transport

The directed movement of substances, in membrane bound vesicles, from the early sorting endosomes to the late sorting endosomes; transport occurs along microtubules and can be experimentally blocked with microtubule-depolymerizing drugs.

Interacting selectively with any protein component of any cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).

A distinct elongated structure, characteristically 10 nm in diameter, that occurs in the cytoplasm of higher 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: keratin filaments of mammalian epithelial cells; desmin filaments found in cells of muscles of all types; vimentin filaments found in mesenchymal cells; neurofilaments of neurons; and glial filaments found in all types of glial cells.

A type of intermediate filament found in the core of neuronal axons. Neurofilaments are heteropolymers composed of three type IV polypeptides: NF-L, NF-M, and NF-H (for low, middle, and high molecular weight). Neurofilaments are responsible for the radial growth of an axon and determine axonal diameter.

Catalysis of the reaction: ATP + H2O = ADP + phosphate in the presence of double-stranded DNA, driving some other reaction.

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.