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Tables
The following online tables are provided for reference. Follow each link to access the desired table(s)
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Amino Acids Table
Here is a list of the standard one-letter amino acid codes and their three-letter equivalents. The synonymous codons and their depiction in the IUB codes are shown. You should recognize that the codons following semicolons (;) are not sufficiently specific to define a single amino acid even though they represent the best possible backtranslation into the IUB codes! |
| Symbol |
3-letter Code |
Amino-acid |
Codons |
| A |
Ala |
Alanine |
GCT,GCC,GCA,GCG |
| B |
Asp,Asn |
Aspartic, Asparagine |
GAT,GAC,AAT,AAC |
| C |
Cys |
Cysteine |
TGT,TGC |
| D |
Asp |
Aspartic |
GAT,GAC |
| E |
Glu |
Glutamic |
GAA,GAG |
| F |
Phe |
Phenylalanine |
TTT,TTC |
| G |
Gly |
Glycine |
GGT,GGC,GGA,GGG |
| H |
His |
Histidine |
CAT,CAC |
| I |
Ile |
Isoleucine |
ATT,ATC,ATA |
| K |
Lys |
Lysine |
AAA,AAG |
| L |
Leu |
Leucine |
TTG,TTA,CTT,CTC,CTA,CTG |
| M |
Met |
Methionine |
ATG |
| N |
Asn |
Asparagine |
AAT,AAC |
| P |
Pro |
Proline |
CCT,CCC,CCA,CCG |
| Q |
Gln |
Glutamine |
CAA,CAG |
| R |
Arg |
Arginine |
CGT,CGC,CGA,CGG,AGA,AGG |
| S |
Ser |
Serine |
TCT,TCC,TCA,TCG,AGT,AGC |
| T |
Thr |
Threonine |
ACT,ACC,ACA,ACG |
| V |
Val |
Valine |
GTT,GTC,GTA,GTG |
| W |
Trp |
Tryptophan |
TGG |
| X |
Xxx |
Unknown |
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| Y |
Tyr |
Tyrosine |
TAT,TAC |
| Y |
Glu,Gln |
Glutamic, Glutamine |
GAA,GAG,CAA,CAG |
| * |
End |
Terminator |
TAA,TAG,TGA |
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| Standard Genetic Code |
| |
U |
C |
A |
G |
| U |
UUU Phe F |
UCU Ser S |
UAU Tyr Y |
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| UUC Phe F |
UCC Ser S |
UAC Tyr Y |
UGU Cys C |
| UUA Leu L |
UCA Ser S |
UAA Stop |
UGC Cys C |
| UUG Leu L |
UCG Ser S |
UAG Stop |
UGA Stop |
| |
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UGG Trp W |
| C |
| CUU Leu L |
CCU Pro P |
CAU His H |
CGU Arg R |
| CUC Leu L |
CCC Pro P |
CAC His H |
CGC Arg R |
| CUA Leu L |
CCA Pro P |
CAA Gln Q |
CGA Arg R |
| CUG Leu L |
CCG Pro P |
CAG Gln Q |
CGG Arg R |
| A |
| AUU Ile I |
ACU Thr T |
AAU Asn N |
AGU Ser S |
| AUC Ile I |
ACC Thr T |
AAC Asn N |
AGC Ser S |
| AUA Ile I |
ACA Thr T |
AAA Lys K |
AGA Arg R |
| AUG Met M |
ACG Thr T |
AAG Lys K |
AGG Arg R |
| G |
| GUU Val V |
GCU ALA A |
GAU Asp D |
GGU Gly G |
| GUC Val V |
GCC ALA A |
GAC Asp D |
GGC Gly G |
| GUA Val V |
GCA ALA A |
GAA Glu E |
GGA Gly G |
| GUG Val V |
GCG ALA A |
GAG Glu E |
GGG Gly G |
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Genome Size and DNA Content
The meaning of each symbol (GCG files), its complement, and the Staden file equivalents are shown below. |
| IUB/GCG |
Meaning |
Complement |
| A |
A |
T |
| C |
C |
G |
| G |
G |
C |
| T / U |
T |
A |
| M |
A or C |
K |
| R |
A or G |
Y |
| W |
A or T |
W |
| S |
C or G |
S |
| Y |
C or T |
R |
| K |
G or T |
M |
| V |
A or C or G |
B |
| H |
A or C or T |
D |
| D |
A or G or T |
H |
| B |
C or G or T |
V |
| X / N |
G or A or T or C |
X |
| not G or A or T or C |
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| Acknowledgment |
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