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Residue and codon codes
Purpose of this page
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DNA bases
| IUPAC 1-letter code | Possible residues | Name |
|---|
| B | T + C + G | Not A |
| D | A + T + G | Not C |
| H | A + T + C | Not G |
| K | T + G | |
| M | A + C | |
| N (X) | A + G + C + T |
a Nucleotide |
| R | A + G |
puRine |
| S | C + G | Strong |
| V | A + C + G | Not T |
| W | A + T | Weak |
| Y | C + T |
pYrimidine |
Amino acids
| Amino Acid | 3-Letter | 1-Letter | Polarity | Acid, basic or neutral | Codons |
|---|
| Alanine | Ala | A | nonpolar | neutral | GCT, GCC, GCA, GCG |
| Arginine | Arg | R | polar | basic (strongly) | CGT, CGC, CGA, CGG, AGA, AGG |
| Asparagine | Asn | N | polar | neutral | AAT, AAC |
| Aspartic acid | Asp | D | polar | acidic | GAT, GAC |
| Cysteine | Cys | C | polar | neutral | TGT, TGC |
| Glutamic acid | Glu | E | polar | acidic | GAA, GAG |
| Glutamine | Gln | Q | polar | neutral | CAA, CAG |
| Glycine | Gly | G | nonpolar | neutral | GGT, GGC, GGA, GGG |
| Histidine | His | H | polar | basic (weakly) | CAT, CAC |
| Isoleucine | Ile | I | nonpolar | neutral | ATT, ATC, ATA |
| Leucine | Leu | L | nonpolar | neutral | TTA, TTG, CTT, CTC, CTA, CTG |
| Lysine | Lys | K | polar | basic | AAA, AAG |
| Methionine | Met | M | nonpolar | neutral | ATG |
| Phenylalanine | Phe | F | nonpolar | neutral | TTT, TTC |
| Proline | Pro | P | nonpolar | neutral | CCT, CCC, CCA, CCG |
| Serine | Ser | S | polar | neutral | TCT, TCC, TCA, TCG, AGT, AGC |
| Threonine | Thr | T | polar | neutral | ACT, ACC, ACA, ACG |
| Tryptophan | Trp | W | nonpolar | neutral | TGG |
| Tyrosine | Tyr | Y | polar | neutral | TAT, TAC |
| Valine | Val | V | nonpolar | neutral | GTT, GTC, GTA, GTG |
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