contractile ring (GO:0070938)

A cytoskeletal structure composed of filamentous protein that forms beneath the membrane of many cells or organelles in the plane of cell or organelle division. Ring contraction is associated with centripetal growth of the membrane that divides the cytoplasm of the two daughter cells or organelles

References

gene ontology: GO:0070938 PMID: 17913889 PMID: 10791428