Medical Definition of Nonsense codon
1.
The three codons, UAA (known as ochre), UAG (amber) and UGA (opal), that do not code for an amino acid but act as signals for the termination of protein synthesis.
Any mutation that causes a base change which produces a nonsense codon results in premature termination of protein synthesis and probably a nonfunctional or nonsense protein.
(13 Nov 1997)
Lexicographical Neighbors of Nonsense Codon
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