Farnesyltransferase catalyzes the covalent modification of proteins carrying the CAAX-sequence at their C-terminus by the transfer of a farnesyl residue from farnesylpyro- phosphate to the thiol of a cysteine side chain. In the CAAX sequence, C represents a cysteine which side chain is farn- esylated, A amino acids which normally, but not necessarily, carry aliphatic side chains, and X mostly methionine or serine [1, 2]. ... Farnesyltransferase is one of the major ...