Activation of ras p21 transforming properties associated with an increase in the release rate of bound guanine nucleotide.

Abstract

An Ala-to-Thr substitution at position 59 activates the transforming properties of the p21ras protein without impairment of GTPase activity, a biochemical alteration associated with other activating mutations. To investigate the basis for the transforming properties of the Thr-59 mutant, we characterized guanine nucleotide release. This reaction exhibited a… (More)

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