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【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 感谢参与,应助指数 +1 amisking: 金币+4, 鼓励发帖帮助解答问题。 2012-06-28 20:08:03 大风吹: 金币+10, ★★★★★最佳答案 2012-06-29 12:32:25
IUPAC ambiguity codes are single-letter codes for nucleotides and amino acids established by the International Union of Pure and Applied Chemistry. This nomenclature is used for specifying Pattern Search parameters.
Nucleotides (Cornish-Bowden, 1985):
Symbol Meaning
G G
A A
T T or U
C C
U U or T
R G or A
Y T, U or C
M A or C
K G, T or U
S G or C
W A, T or U
H A, C, T or U
B G, T, U or C
V G, C or A
D G, A, T or U
N G, A, T, U or C
Amino Acids:
1-Letter Symbol 3-Letter Symbol Meaning
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 Asparagine or Aspartic acid
Z Glx Glutamine or Glutamic acid
X ??? Unknown
Cornish-Bowden, A. (1985). Nomenclature for incompletely specified bases in nucleic acid sequences: recommendations 1984. Nuc. Acids Res. 13:3021-3030. |
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