2.5.1.59 farnesyl diphosphate + protein-cysteine the enzyme catalyzes postttranslational modification of proteins, the farnesyl moieties attached to the substrates are direcly involved in protein-protein interactions as well as in protein-membrane interactions 2.5.1.59 geranylgeranyl diphosphate + Cdc42-cysteine - 2.5.1.59 geranylgeranyl diphosphate + Cdc420-cysteine - 2.5.1.59 geranylgeranyl diphosphate + K Ras-cysteine - 2.5.1.59 geranylgeranyl diphosphate + N-Ras-cysteine - 2.5.1.59 geranylgeranyl diphosphate + protein-cysteine - 2.5.1.59 geranylgeranyl diphosphate + protein-cysteine enzyme catalyses the transfer of the 20-carbon prenyl group from geranylgeranyl diphosphate to the cysteine residue near the C-termini of a variety of eukaryotic proteins 2.5.1.59 geranylgeranyl diphosphate + protein-cysteine this prenylation is necessary for many proteins to interact with membrane localized at proper intracellular sites 2.5.1.59 geranylgeranyl diphosphate + protein-cysteine yeast enzyme is essential for yeast cell growth 2.5.1.59 geranylgeranyl diphosphate + protein-cysteine GGTase-I catalyzes C-terminal lipidation of more than 100 proteins, including many GTP-binding regulatory proteins