Source:http://linkedlifedata.com/resource/umls/id/C1166878
GO: A multiprotein complex composed of gamma-tubulin and other non-tubulin proteins that forms a flexible open ring structure thought to be the unit of nucleation at the minus end of a microtubule. [GOC:clt, PMID:12134075],NCI: A complex comprised of gamma tubulin and other proteins that can act as a scaffold for the nucleation of microtubules.