Abstract
In a previous study, we have identified four types of 3' terminal codon pairs depending on their frequency of occurrence in the Escherichia coli genome: overrepresented, moderately represented, underrepresented, and missing. In this study, the influence of eight codon pairs belonging to these four groups on the efficiency of chloramphenicol acetyltransferase ( cat) gene expression in E. coli is examined. Our results show that the missing codon pairs CCU:UAG (Pro:Stop) and CCC:UAG (Pro:Stop) had decreasing effect, whereas another missing pair CCU:AGG (Pro:Arg) had an opposite effect on the yield of CAT protein in comparison with the wild-type cat gene.
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