Assertion: muscle fiber's filament | /r/HasProperty | protein
Facets:
Source sentences:
text: Thick and thin filaments are themselves composed of proteins.
text: Thick filaments are made of a protein called myosin.
text: Thin filaments are made of three proteins: Actin.
text: There are two kinds of myofilaments, thick filaments composed of the protein myosin, and thin filaments composed of the proteins actin, troponin and tropomyosin.