Signal-transducing Ras guanine nucleotide binding proteins (GTPases) play important roles in decisive cellular processes, such as growth, division, and differentiation.[1, 2] Mutations in the S-farnesylated and S-palmitoylated H-and N-Ras isoforms result in oncogenic activation, which frequently occurs in melanoma, leukemia, and cancers of the bladder, liver, and kidney.[3]