nonsense codon, termination codon
Also found in: Dictionary, Encyclopedia.
nonsense codon, termination codonor
stop codona triplet of MESSENGER RNA bases, such as the OCHRE CODON, that does not code for an AMINO ACID and causes termination of polypeptide synthesis during translation in PROTEIN SYNTHESIS. There are three nonsense codons in the GENETIC CODE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005