| 摘要 |
The invention relates to amino acid-producing bacteria from the family Enterobacteriaceae, in particular from the species Escherichia coli, which contain a stop codon chosen from the group amber, ochre and opal in the nucleotide sequence for the coding region of the rpoS gene and a suppressor for a stop codon chosen from the group amber suppressor, ochre suppressor an d opal suppressor. This invention also relates to a process for preparing amin o acids, in particular L-threonine, using these bacteria.
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