Method for constructing l-valine producing strain, l-valine producing strain and use thereof

Abstract

The present invention provides a method for constructing an L-valine production strain, the L-valine production strain, and use thereof. According to the method for constructing the L-valine-producing strain, a 2,3-butanediol- or acetoin-producing strain is used as a starting strain, and genetic engineering modification is performed on the strain to improve the L-valine yield thereof. The present invention provides a new thought and way for efficient production of L-valine, and obtains a new production strain for efficiently producing L-valine. The L-valine-producing strain obtained in the present invention requires a simple culture medium and has low fermentation substrate and culture costs; meanwhile, the strain has a high L-valine yield and has a single product component easy to separate.

Dependencies are inferred from the claim text.