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 termination codons (in messenger RNA) are UAA, UAG, and UGA. They are also called chain-termination codons, stop codons, or nonsense codons. U = uracil; A = adenine; G = guanine.

Medical dictionary. 2011.

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  • termination codon — The three codons, UAA known as ochre, UAG as amber and UGA as opal, that do not code for an amino acid but act as signals for the termination of protein synthesis. They are not represented by any tRNA and termination is catalysed by protein… …   Dictionary of molecular biology

  • termination codon — See: stop codon …   Glossary of Biotechnology

  • 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… …   Medical dictionary

  • Termination — may refer to:In science: *Termination codon, in molecular biology *Termination factor, in genetics, part of the process of transcribing RNA *Termination type, in lithic reduction, a characteristic indicating the manner in which the distal end of… …   Wikipedia

  • Codon usage bias — refers to differences in the frequency of occurrence of synonymous codons in coding DNA. A codon is a series of three nucleotides (triplets) that encodes a specific amino acid residue in a polypeptide chain or for the termination of translation… …   Wikipedia

  • Codon — A set of any three adjacent bases in the DNA or RNA. There are 64 different codons of which 61 specify the incorporation of an amino acid into a polypeptide chain while the remaining three are stop codons that signal the end of a polypeptide. For …   Medical dictionary

  • Codon — Genetische Code Sonne: Die Kodierung der Aminosäuren (außen) durch die Basentripletts auf der mRNA ist von innen (5 ) nach außen (3 ) zu lesen. Der genetische Code ist eine Regel, nach der in Nukleinsäuren befindliche Dreiergruppen… …   Deutsch Wikipedia

  • Codón de terminación — Esquema de un marco abierto de lectura, que incluye el codón de inicio (o start) y de parada (o stop). En genética se denomina codón de terminación , codón de parada, codón sin sentido o codón stop a aquel codón que no determina en el código… …   Wikipedia Español

  • codon —    A sequence of three bases on the DNA molecule, that represents an amino acid or a termination signal. Groups of codons form genes …   Forensic science glossary

  • Stop codon — In the genetic code, a stop codon (or termination codon) is a nucleotide triplet within messenger RNA that signals a termination of translation.[1] Proteins are based on polypeptides, which are unique sequences of amino acids. Most codons in… …   Wikipedia

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