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Standard Ambiguity Codes

SNPs

Nucleotide ambiguity code as defined in DNA Sequence Assembler.

Symbol Description Bases represented Complement
A Adenine A – – – V
C Cytosine – C – – H
G Guanine – – G – D
T Thymine – – – T B
W Weak A – – T S
S Strong – C G – W
M aMino A C – – K
K Keto – – G T M
R puRine A – G – Y
Y pYrimidine – C – T R
B not A – C G T A
D not C A – G T C
H not G A C – T G
V not T A C G – T
N any Nucleotide A C G T Z
Z Zero – – – – N

Amino Acids and Codons

The standard ambiguity codes for nucleotides and for the one-letter and three-letter designations of amino acids. Notice that all the entries in the same row encodes to the corresponding amino acid.

Amino Acid (full) 3-Let 1-Let Codons (triplets) Compressed (compact)
Alanine Ala A GCT, GCC, GCA, GCG GCN
Cysteine Cys C TGT, TGC TGY
Aspartic Asp D GAT, GAC GAY
Glutamic Glu E GAA, GAG GAR
Phenylalanine Phe F TTT, TTC TTY
Glycine Gly G GGT, GGC, GGA, GGG GGN
Histidine His H CAT, CAC CAY
Isoleucine Ile I ATT, ATC, ATA ATH
Lysine Lys K AAA, AAG AAR
Leucine Leu L TTA, TTG, CTT, CTC, CTA, CTG YTR, CTN
Methionine Met M ATG
Asparagine Asn N AAT, AAC AAY
Proline Pro P CCT, CCC, CCA, CCG CCN
Glutamine Gln Q CAA, CAG CAR
Arginine Arg R CGT, CGC, CGA, CGG, AGA, AGG CGN, MGR
Serine Ser S TCT, TCC, TCA, TCG, AGT, AGC TCN, AGY
Threonine Thr T ACT, ACC, ACA, ACG ACN
Valine Val V GTT, GTC, GTA, GTG GTN
Tryptophan Trp W TGG
Tyrosine Tyr Y TAT, TAC TAY

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.