摘要:
Yeast cells having an exogenous lactate dehydrogenase gene ae modified by reducing L- or D-lactate:ferricytochrome c oxidoreductase activity in the cell. This leads to reduced consumption of lactate by the cell and can increase overall lactate yields in a fermentation process. Cells having the reduced I, or D-lactate:ferricytochrome c oxidoreductase activity can be screened for by resistance to organic acids such as lactic or glycolic acid.
摘要:
Yeast cells having an exogenous lactate dehydrogenase gene ae modified by reducing L- or D-lactate:ferricytochrome c oxidoreductase activity in the cell. This leads to reduced consumption of lactate by the cell and can increase overall lactate yields in a fermentation process. Cells having the reduced L- or D-lactate:ferricytochrome c oxidoreductase activity can be screened for by resistance to organic acids such as lactic or glycolic acid.
摘要:
Yeast cells are genetically modified to disrupt a native metabolic pathway from dihydroxyacetone to glycerol. In certain aspects, the yeast cell is of the genera Kluyueromyces, Candida or Issatchenkia. In other aspects, the yeast cell is capable of producing at least one organic acid, such as lactate. The yeast cells produce significantly less glycerol than the wild-type strains, and usually produce greater yields of desired fermentation products. Yeast cells of the invention often grow well when cultivated, despite their curtailed glycerol production.
摘要:
The present invention provides Rotavirus antigenic polypeptides or antigens that elicit an immune response in animal or human against rotavirus, compositions comprising said rotavirus polypeptides, methods of vaccination against rotavirus, and kits for use with such methods and compositions. The invention further provide novel expression vectors for producing the vaccine antigenic polypeptides.
摘要:
The present invention provides Rotavirus antigenic polypeptides or antigens that elicit an immune response in animal or human against rotavirus, compositions comprising said rotavirus polypeptides, methods of vaccination against rotavirus, and kits for use with such methods and compositions. The invention further provide novel expression vectors for producing the vaccine antigenic polypeptides.