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Medical Dictionary

stop codon

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noun \ˈstäp-\

Medical Definition of stop codon

  1. :  a genetic codon in messenger RNA that signals the termination of protein synthesis during translation <Each codon stands for one of the 20 amino acids that make up proteins or for one of three stop codons that signal the end of a protein chain.—Tina Hesman, Science News, 3 June 2000>—called also termination codon; compare start codon




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