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A complex of gamma tubulin and associated proteins thought to be formed by multimerization of gamma-tubulin small complexes located at equatorial microtubule organizing centers. A cytoskeletal structure composed of actin filaments and myosin that forms beneath the plasma membrane of many cells, including animal cells and yeast cells, in a plane perpendicular to the axis of the spindle, i.e. the cell division plane. Ring contraction is associated with centripetal growth of the membrane that divides the cytoplasm of the two daughter cells. In animal cells, the contractile ring is located inside the plasma membrane at the location of the cleavage furrow. In budding fungal cells, e.g. mitotic S. cerevisiae cells, the contractile ring forms beneath the plasma membrane at the mother-bud neck before mitosis. The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope. The part of a cell or its extracellular environment in which a gene product is located. A gene product may be located in one or more parts of a cell and its location may be as specific as a particular macromolecular complex, that is, a stable, persistent association of macromolecules that function together. The eventual plane of cell division (also known as cell cleavage or cytokinesis) in a dividing cell. The cleavage apparatus, composed of septin structures and the actomyosin contractile ring, forms along this plane. The mitotic, or meiotic, spindle is aligned perpendicular to the division plane. In animal cells, the first sign of cleavage, or cytokinesis, is the appearance of a shallow groove in the cell surface near the old metaphase plate. A contractile ring containing actin and myosin is located just inside the plasma membrane at the location of the furrow. Ring contraction is associated with centripetal growth of the membrane that deepens the cleavage furrow and divides the cytoplasm of the two daughter cells. While the term 'cleavage furrow' was initially associated with animal cells, such a structure occurs in many other types of cells, including unicellular protists. Any of a series of structures composed of septins and septin-associated proteins localized to the cleavage plane which are involved in cytokinesis. Any of a series of septin structures that are localized in the bud neck of a budding fungal cell during the cell cycle. Any constituent part of the cell division plane, the eventual plane of cell division in a dividing cell. Any constituent part of a cell, the basic structural and functional unit of all organisms. A sterol-rich region of the plasma membrane which forms at the cell surface overlying the contractile ring and spreads into the invaginating plasma membrane surrounding the septum. A microtubule organizing center formed by a band of gamma-tubulin that is recruited to a circumferential band of F-actin at the midpoint of a cell and which nucleates microtubules from the cell division site at the end of mitosis. A medial cortical band overlaying the nucleus which acts as a landmark for contractile ring positioning and plays a role in cell cycle regulation.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: cell division site part
Acc: GO:0032155
Aspect: Cellular Component
Desc: Any constituent part of the cell division plane, the eventual plane of cell division in a dividing cell.
Synonyms:
  • cell division plane part
Proteins in PDR annotated with:
   This term: 12 [Search]
   Term or descendants: 184 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0032155 - cell division site part (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle