ochre mutation


Also found in: Encyclopedia.

o·chre mu·ta·tion

a mutation yielding the termination codon UAA, resulting in premature termination of a polypeptide chain. Compare: suppressor mutation.

ochre mutation

a genetic alteration that causes the synthesis of polypeptide chain to terminate prematurely because the triplet of nucleotides that normally codes for the next amino acid in the chain becomes uracil-adenine-guanine, the sequence that signals the end of the chain. It is one of three possible nonsense mutations. See also amber mutation, opal mutation.

ochre mutation

Any mutation that changes a codon to the stop OCHRE CODON.