A structural model for the autoinhibition of the γ-TuRC-activating CM1 domain.
Microtubule nucleation by γ-tubulin ring complexes (γ-TuRCs) must be spatiotemporally controlled to avoid major cell division errors. γ-TuRCs are activated by the centrosome-specific binding of a highly conserved centrosomin motif 1 (CM1) domain, but how binding is prevented in the cytosol remains unclear. We provide t...