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How an intergenic suppression mutation can overcome a nonsense mutation

Description
A nonsense mutation in a protein-coding gene changes a codon for an amino acid into a stop codon, causing translation to terminate prematurely.
Another mutation, in a tRNA gene, can circumvent the first mutation by altering the tRNA anticodon so that it will base-pair with the mutant mRNA.
A functional protein is produced in this situation, even though suppression might not restore the original amino acid at that site.
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