Abstract:
The invention provides non-naturally occurring microbial organisms containing butadiene or 2,4- pentadienoate pathways comprising at least one exogenous nucleic acid encoding a butadiene or 2,4-pentadienoate pathway enzyme expressed in a sufficient amount to produce butadiene or 2,4-pentadienoate. The organism can further contain a hydrogen synthesis pathway. The invention additionally provides methods of using such microbial organisms to produce butadiene or 2,4-pentadienoate by culturing a non-naturally occurring microbial organism containing butadiene or 2,4-pentadienoate pathways as described herein under conditions and for a sufficient period of time to produce butadiene or 2,4-pentadienoate. Hydrogen can be produced together with the production of butadiene or 2,4- pentadienoate.
Abstract:
Provided herein is a non-naturally occurring microbial organism (NNOMO) having a methanol metabolic pathway (MMP) that can enhance the availability of reducing equivalents in the presence of methanol. Such reducing equivalents can be used to increase the product yield of organic compounds produced by the microbial organism, such as 1,2-propanediol (1,2-PDO), n- propanol (n-PrOH), 1,3-propanediol (1,3-PDO) or glycerol. Also provided herein are methods for using such an organism to produce 1,2-PDO, n-PrOH, 1,3-PDO or glycerol.
Abstract:
The invention provides a non-naturally occurring microbial organism having a microbial organism having at least one exogenous gene insertion and/or one or more gene disruptions that confer production of primary alcohols and at least one exogenous nucleic acid that encodes an enzyme that increases the yields of the primary alcohol by (i) enhancing carbon fixation via the reductive TCA cycle, and/or (ii) accessing additional reducing equivalents from gaseous carbon sources and/or syngas components such as CO, C02, and/or H2. A method for producing long chain alcohols includes culturing these non-naturally occurring microbial organisms.
Abstract:
Provided herein is a non-naturally occurring microbial organism having a 1,3-butanediol (1,3 -BDO) pathway and comprising at least one exogenous nucleic acid encoding a 1,3 -BDO pathway enzyme expressed in a sufficient amount to produce 1,3 -BDO. In some embodiments, the pathway includes reducing equivalents from CO or hydrogen. In certain embodiments, a 1,3-BDO pathway proceeds by way of central metabolites pyruvate, succinate or alpha-ketoglutarate. Also provided herein is a method for producing 1,3-BDO, includes culturing such microbial organisms under conditions and for a sufficient period of time to produce 1,3-BDO.
Abstract:
The invention provides a non-naturally occurring microbial organism having a methacrylic acid, methacrylate ester, 3-hydroxyisobutyrate and/or 2-hydroxyisobutyrate pathway. The microbial organism contains at least one exogenous nucleic acid encoding an enzyme in a methacrylic acid pathway. The invention additionally provides a method for producing methacrylic acid, methacrylate ester, 3-hydroxyisobutyrate and/or 2- hydroxyisobutyrate. The method can include culturing methacrylic acid, methacrylate ester, 3-hydroxyisobutyrate and/or 2-hydroxyisobutyrate producing microbial organism, where the microbial organism expresses at least one exogenous nucleic acid encoding a methacrylic acid pathway enzyme in a sufficient amount to produce methacrylic acid, methacrylate ester, 3-hydroxyisobutyrate and/or 2-hydroxyisobutyrate, under conditions and for a sufficient period of time to produce methacrylic acid, methacrylate ester, 3-hydroxyisobutyrate and/or 2-hydroxyisobutyrate.
Abstract:
The invention provides non-naturally occurring microbial organisms having a toluene, benzene, p-toluate, terephthalate, (2-hydroxy-3-methyl-4-oxobutoxy)phosphonate, (2-hydroxy-4-oxobutoxy)phosphonate, benzoate, styrene, 2,4-pentadienoate, 3-butene-lol or 1,3-butadiene pathway. The invention additionally provides methods of using such organisms to produce toluene, benzene, p-toluate, terephthalate, (2-hydroxy-3-methyl-4- oxobutoxy)phosphonate, (2-hydroxy-4-oxobutoxy)phosphonate, benzoate, styrene, 2,4- pentadienoate, 3-butene-lol or 1,3-butadiene.
Abstract:
A non-naturally occurring microbial organism has cyclohexanone pathways that include at least one exogenous nucleic acid encoding a cyclohexanone pathway enzyme. A pathway includes a 2-ketocyclohexane-1 -carboxyl-CoA hydrolase (acting on C-C bond), a 2-ketocyclohexane-l- carboxylate decarboxylase and an enzyme selected from a 2-ketocyclohexane-l-carboxyl-CoA hydrolase (acting on thioester), a 2-ketocyclohexane-l -carboxyl-CoA transferase, and a 2- ketocyclohexane-1-carboxyl-CoA synthetase. A pathway includes an enzyme selected from a 6- ketocyclohex-1-ene-l-carboxyl-CoA hydrolase (acting on C-C bond), a 6-ketocyclohex- 1 -ene- 1 - carboxyl-CoA synthetase, a 6-ketocyclohex-l-ene-l-carboxyl-CoA hydrolase (acting on thioester), a 6-ketocyclohex- 1 -ene- 1 -carboxyl-CoA transferase, a 6-ketocyclohex- 1 -ene- 1 - carboxyl-CoA reductase, a 6-ketocyclohex- 1 -ene- 1 -carboxylate decarboxylase, a 6- ketocyclohex-1 -ene- 1 -carboxylate reductase, a 2-ketocyclohexane-l-carboxyl-CoA synthetase, a 2-ketocyclohexane-l -carboxyl-CoA transferase, a 2-ketocyclohexane-l-carboxyl-CoA hydrolase (acting on thioester), a 2-ketocyclohexane-l -carboxylate decarboxylase, and a cyclohexanone dehydrogenase. A pathway includes an adipate semialdehyde dehydratase, a cyclohexane-1,2- diol dehydrogenase, and a cyclohexane-l,2-diol dehydratase. A pathway includes a 3- oxopimelate decarboxylase, a 4-acetylbutyrate dehydratase, a 3-hydroxycyclohexanone dehydrogenase, a 2-cyclohexenone hydratase, a cyclohexanone dehydrogenase and an enzyme selected from a 3-oxopimeloyl-CoA synthetase, a 3-oxopimeloyl-CoA hydrolase (acting on thioester), and a 3-oxopimeloyl-coA transferase. Each these pathways can include a PEP carboxykinase. A method for producing cyclohexanone includes culturing these non-naturally occurring microbial organisms.
Abstract:
Described herein are fusion proteins including methanol dehydrogenase (MeDH) and at least one other polypeptide such as 3-hexulose-6-phosphate dehydrogenase (HPS) or 6-phospho-3-hexuloisomerase (PHI), such as DHAS synthase or fructose-6-Phosphate aldolase or such as DHA synthase or DHA kinase. In a localized manner, the fusion protein can promote the conversion of methanol to formaldehyde and then to a ketose phosphate such as hexulose 6-phosphate or then to DHA and G3P. When expressed in cells, the fusion proteins can promote methanol uptake and rapid conversion to the ketose phosphate or to the DHA and D3P, which in turn can be used in a pathway for the production of a desired bioproduct. Beneficially, the rapid conversion to the ketose phosphate or to the DHA and G3P can avoid the undesirable accumulation of formaldehyde in the cell. Also described are engineered cells expressing the fusion protein, optionally include one or more additional metabolic pathway transgene(s), methanol metabolic pathway genes, target product pathway genes, cell culture compositions including the cells, methods for promoting production of the target product or intermediate thereof from the cells, compositions including the target product or intermediate, and products made from the target product or intermediate.
Abstract:
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.
Abstract:
Described herein are non-natural NAD+-dependent alcohol dehydrogenases (ADHs) capable of at least two fold greater conversion of methanol or ethanol to formaldehyde or acetaldehyde, respectively, as compared to its unmodified counterpart. Nucleic acids encoding the non-natural alcohol dehydrogenases, as well as expression constructs including the nucleic acids, and engineered cells comprising the nucleic acids or expression constructs are described. Also described are engineered cells expressing a non-natural NAD + -dependent alcohol dehydrogenase, optionally include one or more additional metabolic pathway transgene(s), methanol metabolic pathway genes, target product pathway genes, cell culture compositions including the cells, methods for promoting production of the target product or intermediate thereof from the cells, compositions including the target product or intermediate, and products made from the target product or intermediate.