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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. 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.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: H zone
Acc: GO:0031673
Aspect: Cellular Component
Desc: 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.
Synonyms:
  • H band
  • H disc
Proteins in PDR annotated with:
   This term: 2 [Search]
   Term or descendants: 2 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0031673 - H zone (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle