Abstract: The invention provides a recombinant, acetogenic bacterium that consumes a substrate comprising CH4 and converts at least a portion of the CH4 to a product. In particular, the bacterium of may comprise one or more of exogenous methane monooxygenase (MMO), exogenous nitrite reductase (NIR), and exogenous nitric oxide dismutase (NOD). The invention further provides a method for producing a product comprising providing a substrate comprising CH4 to a culture comprising a recombinant, acetogenic bacterium, whereby the bacterium converts at least a portion of the CH4 to a product.

Abstract: The invention relates to cells and a method for producing acetone.

Abstract: The invention provides a recombinant, acetogenic bacterium that consumes a substrate comprising CH4 and converts at least a portion of the CH4 to a product. In particular, the bacterium of may comprise one or more of exogenous methane monooxygenase (MMO), exogenous nitrite reductase (NIR), and exogenous nitric oxide dismutase (NOD). The invention further provides a method for producing a product comprising providing a substrate comprising CH4 to a culture comprising a recombinant, acetogenic bacterium, whereby the bacterium converts at least a portion of the CH4 to a product.

Abstract: The invention describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO2, which is characterized in that the coenzyme A is not transferred in process step B to an acceptor molecule. In addition, process step B is surprisingly catalyzed by enzymes of the classes of acyl-CoA thioesterase, acyl-CoA synthetase or acyl-CoA thiokinase. A completely novel metabolic pathway is concerned, because the enzymatic hydrolysis of acetoacetyl-CoA without simultaneous transfer of CoA to a receptor molecule has never previously been described for any microbial enzyme.

Abstract: The invention relates to a method and means for the bioengineered fermentative production of solvents, in particular of butanol, acetone and ethanol, and of short-chained carboxylic acids such as acetic acid and butyric acid, in particular in host cells of the species Clostridium. The invention provides new methods and means for regulating the expression of the enzyme activities involved in acid production and or solvent production of the host cell.

Abstract: The invention relates to cells and a method for producing acetone.

Abstract: The invention relates to a method and means for the bioengineered fermentative production of solvents, in particular of butanol, acetone and ethanol, and of short-chained carboxylic acids such as acetic acid and butyric acid, in particular in host cells of the species Clostridium. The invention provides new methods and means for regulating the expression of the enzyme activities involved in acid production and or solvent production of the host cell.

Abstract: The invention describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO2, which is characterized in that the coenzyme A is not transferred in process step B to an acceptor molecule. In addition, process step B is surprisingly catalysed by enzymes of the classes of acyl-CoA thioesterase, acyl-CoA synthetase or acyl-CoA thiokinase. A completely novel metabolic pathway is concerned, because the enzymatic hydrolysis of acetoacetyl-CoA without simultaneous transfer of CoA to a receptor molecule has never previously been described for any microbial enzyme.