METHOD FOR PRODUCING L-CYSTEINE

摘要

A method for producing L-cysteine and the like is provided by developing a novel technique for improving bacterial L-cysteine-producing ability. By culturing a bacterium belonging to the family Enterobacteriaceae and having L-cysteine-producing ability, of which expression of a gene involved in sulfite reduction is enhanced, in a medium containing thiosulfate and collecting L-cysteine, a related substance thereof, or a mixture thereof accumulated in the medium, these compounds are produced.