| abstract |
The present invention includes one stop codon selected from the amber, ochre and opal groups in the nucleotide sequence of the rpoS gene coding region, and a suppressor for the stop codon selected from the amber suppressor, ochre suppressor and opal suppressor groups. And enterobacteria and, in particular, amino acid producing bacteria derived from E. coli species. The invention also relates to a method for producing amino acids, in particular L-threonine, using the bacteria. |