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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. 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 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. 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.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: M band
Acc: GO:0031430
Aspect: Cellular Component
Desc: 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.
Synonyms:
  • mesophragma
  • midline
  • M line
  • M disc
Proteins in PDR annotated with:
   This term: 37 [Search]
   Term or descendants: 37 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0031430 - M band (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle