myosin filament


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Related to myosin filament: sarcomere, tropomyosin, actin filament

filament

 [fil´ah-ment]
1. a delicate fiber or thread.
2. in an x-ray tube, the wire (cathode) that makes electrons available for interaction with the anode when it is heated to incandescence to form an electron cloud.
actin filament one of the thin contractile filaments in a myofibril, composed mainly of actin; each actin filament is surrounded by three myosin filaments.
myosin filament one of the thick contractile filaments in a myofibril, composed mainly of myosin; each myosin filament is surrounded by six actin filaments.

my·o·sin fil·a·ment

one of the contractile elements in skeletal, cardiac, and smooth muscle fibers; in skeletal muscle, the filament is about 15 nm thick and 1.5 mcm long.
Synonym(s): thick filament

my·o·sin fil·a·ment

(mī'ō-sin fil'ă-mĕnt)
One of the contractile elements in skeletal, cardiac, and smooth muscle fibers; in skeletal muscle, the filament is about 10 nm thick and1.5 mcm long.
References in periodicals archive ?
1998) Extensibility of the Actin and Myosin Filaments in Various States of Skeletal Muscle as Studied by X-ray Diffraction.
We proposed a new theory that Z discs and actin filaments in the half part of each sarcomere, which is toward origin end of muscle fiber, are not pulled toward the center of myosin filament because if they are pulled, the ultimate pull will be applied on the origin end of the muscle that is not movable.
Smooth muscle cells possess a contractile apparatus consisting of actin and myosin filaments and the cytoskeleton.
1987) Sliding movement of single actin filaments on one-headed myosin filaments.
1983) Phosphorylation of myosin light chain modulates the in vitro movement of fibrils composed of actin and myosin filaments from skeletal muscle.