LACTIC ACID BACILLUS BACTERIUM HAVING TRYPTOPHAN-PRODUCING ABILITY

摘要

NEW MATERIAL:DNA containing at least one of tryptophan-synthesizing gene trp D, trp C, trp F, trp B and trp A originated from lactic acid Bacillus bacteria. USE:For the biological synthesis of tryptophan, etc. PREPARATION:A DNA fragment containing a gene relating to the biological synthesis of the tryptophan is prepared from the chromosome DNA of Lactobacterium.casei RNL 7 strain.