Chain-termination codon: A set of three adjacent bases in the DNA or their complementary bases in messenger RNA that specifies the end of a polypeptide chain.
The three chain-termination codons (in messenger RNA) are UAA, UAG, and UGA. They are also called termination codons, stop codons, or nonsense codons.
U = uracil; A = adenine; G = guanine.
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â€“noun stop codon.
Codon recognition in polypeptide chain termination: site directed crosslinking of termination codon to Escherichia coli release factor 2.
Excerpt. Results of biochemical studies (Last et al., 1967; Capecchi, 1967; Bretscher, 1968) and genetic studies (Weigert and Garen, 1965; Brenner ...
chain termination codon definition