Amino Acids

A group of twenty compounds whose residues are common components of oligopeptides, polypeptides and proteins.

#	Amino Acid	1-Letter Symbol	3-Letter Symbol	Molecular Weight	Codons
1	Alanine	A	Ala	89	GCA, GCC, GCG, GCU
2	Arginine	R	Arg	174	AGA, AGG, CGA, CGC, CGG, CGU
3	Asparagine	N	Asn	150	AAC, AAU
4	Aspartic acid	D	Asp	133	GAC, GAU
5	Cysteine	C	Cys	121	UGC, UGU
6	Glutamic acid	E	Glu	147	GAA, GAG
7	Glutamine	Q	Gln	146	CAA, CAG
8	Glycine	G	Gly	75	GGA, GGC, GGG, GGU
9	Histidine	H	His	155	CAC, CAU
10	Isoleucine	I	Ile	131	AUA, AUC, AUU
11	Leucine	L	Leu	131	CUA, CUC, CUG, CUU, UUA, UUG
12	Lysine	K	Lys	146	AAA, AAG
13	Methionine	M	Met	149	AUG
14	Phenylalanine	F	Phe	165	UUC, UUU
15	Proline	P	Pro	115	CCA, CCC, CCG, CCU
16	Serine	S	Ser	105	AGC, AGU, UCA, UCC, UCG, UCU
17	Threonine	T	Thr	119	ACA, ACC, ACG, ACU
18	Tryptophan	W	Trp	204	UGG
19	Tyrosine	Y	Tyr	181	UAC, UAU
20	Valine	V	Val	117	GUA, GUC, GUG, GUU
Sources Singleton, P. Dictionary of DNA and Genome Technology. Malden, MA: Blackwell Publishing, 2008.