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A closed structure, found only in eukaryotic cells, that is completely surrounded by unit membrane and contains liquid material. Cells contain one or several vacuoles, that may have different functions from each other. Vacuoles have a diverse array of functions. They can act as a storage organelle for nutrients or waste products, as a degradative compartment, as a cost-effective way of increasing cell size, and as a homeostatic regulator controlling both turgor pressure and pH of the cytosol. 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 lipid bilayer surrounding the contractile vacuole. Any small, fluid-filled, spherical organelle enclosed by a lipid bilayer. Any small, fluid-filled, spherical organelle enclosed by membrane or protein. Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane. A specialized vacuole of eukaryotic cells, especially Protozoa, that fills with water from the cytoplasm and then discharges this externally by the opening of contractile vacuole pores. Its function is probably osmoregulatory.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: contractile vacuole
Acc: GO:0000331
Aspect: Cellular Component
Desc: A specialized vacuole of eukaryotic cells, especially Protozoa, that fills with water from the cytoplasm and then discharges this externally by the opening of contractile vacuole pores. Its function is probably osmoregulatory.
Proteins in PDR annotated with:
   This term: 22 [Search]
   Term or descendants: 29 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0000331 - contractile vacuole (interactive image map)
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