DNA FRAGMENT RHTB ENCODING SYNTHESIS OF PROTEIN RHTB THAT DETERMINES RESISTANCE OF BACTERIUM ESCHERICHIA COLI TO L-HOMOSERINE AND METHOD OF L-AMINO ACID PRODUCING

摘要

A bacterium which has an ability to produce an amino acid and in which a novel gene (rhtB) coding for a protein having an activity of making a bacterium having the protein L-homoserine-resistant is enhanced, is cultivated in a culture medium to produce and accumulate the amino acid in the medium, and the amino acid is recovered from the medium.