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Home  >Technical Resource  > General Molecular Biology Data > The Genetic Code

The Genetic Code

Second Position
First Position (5´ end)		U	C	A	G		Third Position (3´ end)
	U	UUU UUC Phe UUA UUG Leu	UCU UCC UCA UCG Ser	UAU UAC Tyr UAA  Stop UAG  Stop	UGU UGC Cys UGA  Stop UGG Trp	U C A G
	C	CUU CUC CUA CUG Leu	CCU CCC CCA CCG Pro	CAU CAC His CAA CAG Gln	CGU CGC CGA CGG Arg	U C A G
	A	AUU AUC AUA Ile AUG Met	ACU ACC ACA ACG Thr	AAU AAC Asn AAA AAG Lys	AGU AGC Ser AGA AGG Arg	U C A G
	G	GUU GUC GUA GUG Val	GCU GCC GCA GCG Ala	GAU GAC Asp GAA GAG Glu	GGU GGC GGA GGG Gly	U C A G

Termination Signals	Single Letter Code
UAA (Ochre)	A = adenosine	B = C or G or T
UAG (Amber)	C = cytidine	D = A or G or T
UGA (Opal)	G = guanosine	H = A or C or T
	T = thymidine	K = G or T
		M = A or C
		N = A or C or G or T
		R = A or G
		S = C or G
		V = A or C or G
		W = A or T
		Y = C or T