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Farnesyltransferase Inhibitor, Cys-4-Abz-Met

Cat no: F0019-58Y

Farnesyltransferase Inhibitor, Cys-4-Abz-Met

Sequence (linear): Cys-4-Abz-Met\n\nThe farnesyltransferase inhibitors (FTIs) are a class of experimental cancer drugs that target protein farnesyltransferase with the downstream effect of preventing the proper functioning of the Ras protein, which is commonly abnormally active in cancer.\n\nStudies have suggested that interference with certain post-translational modification processes seem to have quite a high selectivity for targeting cells displaying tumor phenotypes although the reason for this is a matter of controversy (as will be explained below).\nAfter translation, RAS goes through four steps of modification: isoprenylation, proteolysis, methylation and palmitoylation. Isoprenylation involves the enzyme farnesyltransferase (FTase) transferring a farnesyl group from farnesyl pyrophosphate (FPP) to the pre-RAS protein. Also, a related enzyme geranylgeranyltransferase I (GGTase I) has the ability to transfer a geranylgeranyl group to K and N-RAS (the implications of this are discussed below). Farnesyl is necessary to attach RAS to the cell membrane. Without attachment to the cell membrane, RAS is not able to transfer signals from membrane receptors (Reuter et al., 2000).\n[edit]Development of FTIs\n\nAfter a program of high-throughput screening of a class of drugs targeting the first step, the farnesyltransferase inhibitors (FTIs) were developed (Reuter et al., 2000). A number of molecules were found to have FTI activity. Some earlier compounds were found to have major side effects, and their development was discontinued. The others have entered clinical trials for different cancers. SCH66336 (Ionafarnib) was the first to do so, followed by R115777 (Zarnestra, Tipifarnib) (Caponigro et al., 2003). Unfortunately, the predicted

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SPECIFICATIONS

Catalog Number

F0019-58Y

Size

25mg

Form

Supplied as a lyophilized powder.

Purity

~95%. Purified by HPLC.

Alternative Names

Cys-4-Abz-Met

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