| microfilament | <cell biology> Cytoplasmic filament of F actin (5-7nm) which function in structure and movement in eukaryotic cells. They may be laterally associated with other proteins (tropomyosin, alpha actinin) in some cases and may be anchored to the membrane. Microfilaments are conspicuous in adherens junctions. (14 Oct 1997) |
|---|---|
| microfilament proteins | Filaments which are composed primarily of actin and found in the cytoplasmic matrix of almost all cells. They are often associated with microtubules and may play a role in cytoskeletal function and/or mediate movement of the cell or the organelles within the cell. (12 Dec 1998) |
| microfilaments | The smallest of the cytoskeletal filaments. They are composed chiefly of actin and/or myosin. (12 Dec 1998) |