The genetic code binds to a series of triplets of nucleotides in DNA, each of which, upon transition to RNA, defines the synthesis of an amino acid. Sometimes different triplets correspond to the same amino acid.
The table shows the codons and their nucleobases – A, T, G, C.
Amino acid | Code | Codon |
---|---|---|
Alanine | Ala | GCT, GCC, GCA, GCG |
Arginine | Arg | CGT, CGC, CGA, CGG, AGA, AGG |
Asparagine | Asn | AAT, AAC |
Aspartic acid | Asp | GAT, GAC |
Cysteine | Cys | TGT, TGC |
Glutamine | Gln | CAA, CAG |
Glutamic acid | Glu | GAA, GAG |
Glycine | Gly | GGT, GGC, GGA, GGG |
Histidine | His | CAT, CAC |
Isoleucine | Ile | ATT, ATC, ATA |
Leucine | Leu | TTA, TTG, CTT, CTC, CTA, CTG |
Lysine | Lys | AAA, AAG |
Methionine | Met | ATG |
Phenylalanine | Phe | TTT, TTC |
Proline | Pro | CCT, CCC, CCA, CCG |
Serine | Ser | TCT, TCC, TCA, TCG, AGT, AGC |
Threonine | Thr | ACT, ACC, ACA, ACG |
Tryptophan | Trp | TGG |
Tyrosine | Tyr | TAT, TAC |
Valine | Val | GTT, GTC, GTA, GTG |
start codon | ATG | |
stop codon | TAA, TGA, TAG |