myosin(redirected from thick filaments)
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Related to thick filaments: thin filaments
Any of a class of proteins that bind with actin filaments and generate many kinds of cell movement, especially the contraction of myofibrils in muscle cells.
[Greek muos, genitive of mūs, muscle; see myo- + -in.]
(Biochemistry) the chief protein of muscle that interacts with actin to form actomyosin during muscle contraction; it is also present in many other cell types
[C19: from myo- + -ose2 + -in]
my•o•sin(ˈmaɪ ə sɪn)
the principal contractile protein of muscle.
A contractile protein occurring in muscle.
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|Noun||1.||myosin - the commonest protein in muscle; a globulin that combines with actin to form actomyosin|
actomyosin - a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions
globulin - a family of proteins found in blood and milk and muscle and in plant seed