Cell Component
microfilament Audio
mi·cro·fil·a·ment [ mahy-kruh-fil-uh-muh nt ]
Subclass of:
Cytoskeleton
Definitions related to microfilaments:
  • (myofilament) The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
  • Submicroscopic filaments composed chiefly of actin, found in the cytoplasmic matrix of most cells, often in close association with the microtubules; may play a role in cell and organelle movement and in supportive and cytoskeletal function.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • (myofilament) The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
  • (actin filament) The finest filamentous element of the cytoskeleton, having a diameter of about 5 nm and consisting primarily of actin.
    NCI
    U.S. National Cancer Institute, 2021
  • (actin cytoskeleton) Fibers composed of MICROFILAMENT PROTEINS, which are predominately ACTIN. They are the smallest of the cytoskeletal filaments.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (myofilament) The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
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