List of Amino Acids and Their Abbreviations

Nonpolar Amino Acids (hydrophobic)

amino acid three letter code single letter code
glycine Gly G
alanine Ala A
valine Val V
leucine Leu L
isoleucine Ile I
methionine Met M
phenylalanine Phe F
tryptophan Trp W
proline Pro P

Polar (hydrophilic)

serine Ser S
threonine Thr T
cysteine Cys C
tyrosine Tyr Y
asparagine Asn N
glutamine Gln Q

Electrically Charged (negative and hydrophilic)

aspartic acid Asp D
glutamic acid Glu E

Electrically Charged (positive and hydrophilic)

lysine Lys K
arginine Arg R
histidine His H


Yellow amino acids contain sulfur.
Blue amino acids can be phosphorylated.

glycine
alanine
valine
leucine

 

isoleucine
methionine
phenylalanine
tryptophan
proline

 

serine
threonine
cysteine

 

tyrosine
asparagine
glutamine

 

aspartic acid
glutamic acid

 

lysine
arginine
histidine

 



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© Copyright 2002 Department of Biology, Davidson College, Davidson, NC 28036
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