Gamma tubulin is a member of the tubulin superfamily. Gamma tubulin localizes to the centrosome where it binds to microtubules as part of a complex referred to as the gamma-tubulin ring complex. The protein mediates microtubule nucleation and is required for microtubule formation and progression of the cell cycle [taken from NCBI Entrez Gene (GeneID: 7283)].