Genetic code

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 nucleobasesA, 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
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