Module 8

Stop codons

When translation ends.

End of the message

Stop codons (UAA, UAG, UGA) signal the end of translation. When the cell reaches a stop codon, it releases the protein.

Python
stop_codons = {"UAA", "UAG", "UGA"}
codon = "UAG"
print(codon in stop_codons)
True

What do stop codons do?