The present application discloses genetically modified yeast cells comprising an active 3-HP fermentation pathway, and the use of these cells to produce 3-HP.

The present application discloses genetically modified yeast cells comprising an active 3-HP fermentation pathway, and the use of these cells to produce 3-HP.

The invention provides non-naturally occurring microbial organisms containing a fatty alcohol, fatty aldehyde or fatty acid pathway, wherein the microbial organisms selectively produce a fatty alcohol, fatty aldehyde or fatty acid of a specified length. Also provided are non-naturally occurring microbial organisms having a fatty alcohol, fatty aldehyde or fatty acid pathway, wherein the microbial organisms further include an acetyl-CoA pathway. In some aspects, the microbial organisms of the invention have select gene disruptions or enzyme attenuations that increase production of fatty alcohols, fatty aldehydes or fatty acids. The invention additionally provides methods of using the above microbial organisms to produce a fatty alcohol, a fatty aldehyde or a fatty acid.

The invention is directed to a non-naturally occurring microbial organism comprising a first attenuation of a succinyl-CoA synthetase or transferase and at least a second attenuation of a succinyl-CoA converting enzyme or a gene encoding a succinate producing enzyme within a multi-step pathway having a net conversion of succinyl-CoA to succinate.

A method for constructing an ALA production bacterial strain, the method enhances the activity of related enzymes promoting the synthesis of oxaloacetate and in the 5-aminolevulinic acid (ALA) production bacterial strain, or introducing exogenous related enzymes promoting the synthesis of oxaloacetate, such as phosphoenolpyruvate carboxylase or pyruvate carboxylase, and/or reducing the activity of related enzymes in the downstream metabolic pathway of succinyl coenzyme A in the bacterial strain, such as succinyl coenzyme A synthetase or succinate dehydrogenase, and/or reducing the activity of phosphoenolpyruvate carboxylated kinase and/or malic enzyme. An ALA high-yield bacterial strain constructed by utilizing the method, and method for utilizing the bacterial strain to prepare ALA.

Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.

The present application discloses genetically modified yeast cells comprising an active 3-HP fermentation pathway, and the use of these cells to produce 3-HP.

The present invention provides biochemical pathways, glyoxylate producing recombinant microorganisms, and methods for the production and yield improvement of glycolic acid and/or glycine via a reverse glyoxylate shunt. The reverse glyoxylate shunt comprises an enzyme that catalyzes the carboxylation of phosphoenol pyruvate (PEP) to oxaloacetate (OAA), or an enzyme that catalyzes the carboxylation of pyruvate to oxaloacetate (OAA) or an enzyme that catalyzes the carboxylation of pyruvate to malate or a combination of any of the previous reactions; an enzyme that catalyzes the conversion of malate to malyl-CoA; an enzyme that catalyzes the conversion of malyl-CoA to glyoxylate and acetyl-CoA; and optionally an enzyme that catalyzes the conversion of oxaloacetate (OAA) to malate. Glyoxylate is reduced to produce glycolate. Alternatively, glyoxylate is converted to glycine. The reverse glyoxylate shunt pathway of the present invention can be utilized synergistically with other glycolic acid and/or glycine producing pathways to increase product yield.

The present disclosure provides methods for increasing drought resistance, salt resistance, photosynthetic rate, biomass production and water-use efficiency of a plant. The methods encompass expression of CAM-specific a phosphoenolpyruvate carboxylase (PEPC) in the plant. In comparison to a plant not manipulated in this manner, the disclosed, genetically-modified, plants display improved drought resistance and salt resistance. Also provided are plants that can be obtained by the method according to the invention, and nucleic acid vectors to be used in the described methods.

Metabolites produced by a microorganism using oxaloacetate, pyruvate and/or acetyl-CoA as substrate or co-substrate upstream in the biosynthesis pathway, and more particularly using oxaloacetate. There is indeed a need in the art for transformed, in particular recombinant, microorganisms having at least an increased ability to produce oxaloacetate, pyruvate and/or acetyl-CoA, and in particular oxaloacetate, thus allowing an increased capacity to produce metabolites produced using oxaloacetate, pyruvate and/or acetyl-CoA as substrate or co-substrate upstream in the biosynthesis pathway, and in particular amino acids and their derivatives thereof, fatty acids, derivatives from the mevalonate pathway (in particular farnesyl, squalene, lanosterol, cholesterol and derivatives, and dolichols), flavonoides and/or polyketides. The solution proposed is the use of a genetically modified yeast comprising many modifications as described in the present text.