A handbell used for summoning monks. / The "bell" or flaring mouth of a trumpet.

(biochemistry) A sequence of three adjacent nucleotides, which encode for a specific amino acid during protein synthesis or translation.

plural of codon

The codon at which translation of mRNA into protein starts, encoding the first amino acid.

(biology, genetics, biochemistry) a sequence of three RNA nucleotides (A, C, G or U) that instruct the synthesis, or translation, of a protein to stop. The three-letter stop codon sequences have been given names: "UAG" is amber, "UGA" is opal, and "UAA" is ochre.

(genetics) A codon that signals the first amino acid to be used in the synthesis of the polypeptide chain of a protein; either AUG or GUG

plural of start codon

plural of initiation codon

Synonym of stop codon

plural of termination codon