Recombinant DNA, microorganism carrying said recombinant DNA, and process for producing L-amino acids by the use of said microorganism

摘要

The invention relates to a plasmid of phage capable of autonomic multiplication having the gene for acetohydroxy acid synthase incorporated therein, to a microorganism carrying a plasmid or phage as defined above, a recombinant DNA comprising the gene coding for acetohydroxy acid synthase and a process for producing L-valine, L-leucine or L-isoleucine, which comprises growing a microorganism as defined above and recovering the objective amino acid from the culture liquor.