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A vinculin-containing myofibril attachment structure of striated muscle that connects sarcomeres to the extracellular matrix. In nematode body wall muscle, the dense body performs the dual role of Z-disk and costamere. A form of the tropomyosin dimer found associated with actin and the troponin complex in muscle thin filaments. Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached. A complex of accessory proteins (typically troponin T, troponin I and troponin C) found associated with actin in muscle thin filaments; involved in calcium regulation of muscle contraction. The repeating unit of a myofibril in a muscle cell, composed of an array of overlapping thick and thin filaments between two adjacent Z discs. The midline of aligned thick filaments in a sarcomere; location of specific proteins that link thick filaments. Depending on muscle type the M band consists of different numbers of M lines. Electron-dense region associated with a smooth muscle contractile fiber. The contractile fiber of smooth muscle cells. Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane and occurring within the cell. Includes ribosomes, the cytoskeleton and chromosomes. Any constituent part of a contractile fiber, a fiber composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle. A region of the A band in which myosin-binding protein C is located and that can be seen by electron microscopy. This is a functional zone that also includes myosin. Fibers, composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle. Filaments formed of actin and associated proteins; attached to Z discs at either end of sarcomeres in myofibrils. Regular periodic sub membranous arrays of vinculin in skeletal and cardiac muscle cells, these arrays link Z-discs to the sarcolemma and are associated with links to extracellular matrix. Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm. A filament of myosin found in a muscle cell of any type. The dark-staining region of a sarcomere, in which myosin thick filaments are present; the center is traversed by the paler H zone, which in turn contains the M line. A relatively pale zone traversing the center of the A band of a sarcomere, visible in relaxed muscle fibers; consists of the central portion of thick (myosin) filaments that are not overlapped by thin (actin) filaments. A region of a sarcomere that appears as a light band on each side of the Z disc, comprising a region of the sarcomere where thin (actin) filaments are not overlapped by thick (myosin) filaments; contains actin, troponin, and tropomyosin; each sarcomere includes half of an I band at each end.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: contractile fiber part
Acc: GO:0044449
Aspect: Cellular Component
Desc: Any constituent part of a contractile fiber, a fiber composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle.
Synonyms:
  • contractile fibre component
  • muscle fiber component
  • muscle fibre component
Proteins in PDR annotated with:
   This term: 0
   Term or descendants: 313 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0044449 - contractile fiber part (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle