L-cysteine-producing bacterium and a method for producing L-cysteine
US8647847B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2012 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | May 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K14/245
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
An L-cysteine-producing bacterium is provided, as well as a method for producing L-cysteine etc. using the bacterium by developing a novel technique for improving L-cysteine-producing ability of a bacterium. By culturing a bacterium belonging to the family Enterobacteriaceae, which has L-cysteine-producing ability and is modified so that activity of a protein encoded by the yciW gene, for example, a protein defined by the following (A) or (B), is reduced, in a medium, and collecting L-cysteine, L-cystine, a derivative thereof, or a mixture thereof from the medium, these compounds are produced: (A) a protein having the amino acid sequence shown in SEQ ID NO: 2, (B) a protein having the amino acid sequence shown in SEQ ID NO: 2, but which includes substitution, deletion, insertion, or addition of one or several amino acid residues, reduction of which activity in the bacterium results in improvement in the L-cysteine-producing ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.