S-farnesyl cysteine

Kingdom	Residues	Position	Rule
Eukaryotes and Viruses	C	Three residues away from the C-terminus	PDOC00266. Frequently associated with cleavage of a C-terminal propeptide (CAAX processing) and subsequent methylation of new C-terminus.

Mass difference:

	FARN
average	204.3556
monoisotopic	204.1878