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US 2012/0252076 A1Published application
Method for producing l-cysteine
AssigneeAjinomoto Co., Inc.
InventorsShunsuke Yamazaki, Gen Nonaka, Kazuhiro Takumi
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Abstract
A method for producing L-cysteine and the like is provided by developing a novel technique for improving bacterial L-cysteine-producing ability. The method includes the steps of culturing a bacterium belonging to the genus Escherichia which has L-cysteine-producing ability, and in 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 which accumulate in the medium.
Claims8
A method for producing L-cysteine, a related substance thereof, or a mixture thereof, which comprises:
- A) culturing a bacterium belonging to the genus Escherichia in a medium comprising thiosulfate, which bacterium has L-cysteine-producing ability and is modified so that expression of a gene involved in sulfite reduction is increased;
- and
- B) collecting L-cysteine, a related substance thereof, or a mixture thereof from the medium.
Dependencies are inferred from the claim text.