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Any constituent part of the cytoskeleton, a cellular scaffolding or skeleton that maintains cell shape, enables some cell motion (using structures such as flagella and cilia), and plays important roles in both intra-cellular transport (e.g. the movement of vesicles and organelles) and cellular division. Includes constituent parts of intermediate filaments, microfilaments, microtubules, and the microtrabecular lattice. A tubular structure with flared ends, shaped like an hourglass and composed of highly ordered arrays of septin filaments, that forms at the bud neck of a dividing cell. In S. cerevisiae, this structure is located at the bud neck throughout most of the cell cycle and the septins are fixed within the structure, not exchanging with soluble septins. This septin structure acts as a scaffold for other proteins that function at the bud neck. 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. A ring-shaped structure that forms at the site of cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins. In S. cerevisiae, this structure forms at the time of bud emergence and the septins show a high rate of exchange. Any of a series of structures composed of septins and septin-associated proteins localized to the cleavage plane which are involved in cytokinesis. Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. The part of the cytoskeleton (the internal framework of a cell) composed of septins and associated proteins. Includes septin cytoskeleton-associated complexes. A tight ring-shaped structure that forms in the division plane at the site of cytokinesis in a prospore; composed of septins as well as septin-associated proteins. Any constituent part of the cell division plane, the eventual plane of cell division in a dividing cell. Any constituent part of the cell cortex, the region of a cell that lies just beneath the plasma membrane and often, but not always, contains a network of actin filaments and associated proteins. A constituent part of an intracellular organelle, an organized structure of distinctive morphology and function, occurring within the cell. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton but excludes the plasma membrane. Any constituent part of a cell, the basic structural and functional unit of all organisms. Two separate septin rings that are formed from the septin collar at the time of cytokinesis in cells that divide by budding. These two rings are thought to delineate a special compartment in which factors involved in cytokinesis are concentrated. Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles. The region of a cell that lies just beneath the plasma membrane and often, but not always, contains a network of actin filaments and associated proteins.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: cleavage apparatus septin structure
Acc: GO:0032161
Aspect: Cellular Component
Desc: Any of a series of structures composed of septins and septin-associated proteins localized to the cleavage plane which are involved in cytokinesis.
Proteins in PDR annotated with:
   This term: 0
   Term or descendants: 16 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0032161 - cleavage apparatus septin structure (interactive image map)
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