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Sequence of galK amber allele and oligos. The sequence of part of both strands of the galK amber gene is shown centered on the TAG amber codon. The G:C pair to be changed is boxed. Part of the 70-base oligo sequence for the four oligos used to correct the amber codon back to tyrosine codons TAT or TAC is shown above and below the gene sequence, with the base change shown in lower case.
