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Brief Communication

Nature Cell Biology 5, 578–581 (1 June 2003) | doi:10.1038/ncb999

Rheb is a direct target of the tuberous sclerosis tumour suppressor proteins

Yong Zhang , Xinsheng Gao , Leslie J. Saucedo , Binggen Ru , Bruce A. Edgar & Duojia Pan

Mutations in the TSC1 or TSC2 genes cause tuberous sclerosis, a benign tumour syndrome in humans. Tsc2 possesses a domain that shares homology with the GTPase-activating protein (GAP) domain of Rap1-GAP, suggesting that a GTPase might be the physiological target of Tsc2.