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Bipolar filaments formed of polymers of a muscle-specific myosin II isoform, found in the middle of sarcomeres in myofibrils. Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. Any constituent part of a contractile fiber, a fiber composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle. Fibers, composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle. A protein complex, formed of one or more myosin heavy chains plus associated light chains and other proteins, that functions as a molecular motor; uses the energy of ATP hydrolysis to move actin filaments or to move vesicles or other cargo on fixed actin filaments; has magnesium-ATPase activity and binds actin. Myosin classes are distinguished based on sequence features of the motor, or head, domain, but also have distinct tail regions that are believed to bind specific cargoes. A filament of myosin found in a muscle cell of any type. A myosin complex containing two class II myosin heavy chains, two myosin essential light chains and two myosin regulatory light chains. Also known as classical myosin or conventional myosin, the myosin II class includes the major muscle myosin of vertebrate and invertebrate muscle, and is characterized by alpha-helical coiled coil tails that self assemble to form a variety of filament structures.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: muscle myosin complex
Acc: GO:0005859
Aspect: Cellular Component
Desc: A filament of myosin found in a muscle cell of any type.
Proteins in PDR annotated with:
   This term: 15 [Search]
   Term or descendants: 23 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0005859 - muscle myosin complex (interactive image map)
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