γ-tubulin acts within two main complexes, γ-tubulin small complexes (γ-TuSCs) and γ-tubulin ring complexes (γ-TuRCs). γ-tubulin complexes are composed of GTP-bound γ-tubulin associated with other non-tubulin proteins. These complexes are recruited to the centrosomes where they catalyze the microtubule nucleation and stabilization. (Adapted from
FBrf0190946).