Dna codificador de aspartoquinase iii de bactérias pertencentes ao gênero escherichia dna recombinante microorganismo e processo para produzir um l-amino-ácido

摘要

A process for producing an L-amino acid at good efficiency through fermentation is provided. Means For Solution A DNA encoding aspartokinase III derived from bacteria of the genus Escherichia and having mutation by which feedback inhibition with L-lysine is released is introduced into cells to form transformant bacteria of the genus Escherichia, and these bacteria are incubated in an appropriate culture medium. An L-amino acid is produced and accumulated in the culture, and collected from this culture.