IUPAC Codes

Submitted by William on Sat, 11/29/2008 - 15:38

Amino acid codes

1-letter 3-letter description
A Ala Alanine
R Arg Arginine
N Asn Asparagine
D Asp Aspartic
acid
C Cys Cysteine
Q Gln Glutamine
E Glu Glutamic
acid
G Gly Glycine
H His Histidine
I Ile Isoleucine
L Leu Leucine
K Lys Lysine
M Met Methionine
F Phe Phenylalanine
P Pro Proline
S Ser Serine
T Thr Threonine
W Trp Tryptophan
Y Tyr Tyrosine
V Val Valine
B Asx Aspartic
acid or Asparagine
Z Glx Glutamine
or Glutamic acid
X Xaa Any
amino acid

 
Nucleic acid codes

code description
A Adenine
C Cytosine
G Guanine
T Thymine
U Uracil
R Purine
(A or G)
Y Pyrimidine
(C, T, or U)
M C
or A
K T,
U, or G
W T,
U, or A
S C
or G
B C,
T, U, or G (not A)
D A,
T, U, or G (not C)
H A,
T, U, or C (not G)
V A,
C, or G (not T, not U)
N Any
base (A, C, G, T, or U)