Chain-termination codon

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.

Medical dictionary. 2011.

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  • chaintermination codon — chain termination codon n. See stop codon. * * * …   Universalium

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  • Stop 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 stop codons (in messenger RNA) are UAA, UAG, and UGA. They are also called termination codons or… …   Medical dictionary

  • stop codon — A set of three nucleotides for which there is no corresponding tRNA molecule to insert an amino acid into the polypeptide chain. Protein synthesis is hence terminated and the completed polypeptide released from the ribosome. Three stop codons are …   Glossary of Biotechnology

  • Nonsense codon — A set of three adjacent bases in the DNA or their complementary bases in messenger RNA that specifies the premature end of a polypeptide chain. The three nonsense codons in messenger RNA are UAA, UAG, and UGA. When these codons are in their… …   Medical dictionary

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