Abstract:
The present invention relates to a method of identifying a heterologous polypeptide having enzymatic activity for converting pyruvate, acetaldehyde or acetate into acetyl-CoA in (the cytosol of) a yeast cell comprising: a) providing a mutated yeast cell comprising a deletion of at least one gene of the (PDH) by-pass, selected from the genes encoding the enzymes pyruvate decarboxylase (PDC), acetaldehyde dehydrogenase (ALD), and acetyl-CoA synthetase (ACS); b) transforming said mutated yeast cell with an expression vector comprising a heterologous nucleotide sequence encoding a candidate polypeptide having potential enzymatic activity for converting pyruvate, acetaldehyde or acetate into acetyl-CoA; c) testing said recombinant mutated yeast cell for its ability to grow on minimal medium containing glucose as sole carbon source, and d) identifying said candidate polypeptide as a heterologous polypeptide having enzymatic activity for converting pyruvate, acetaldehyde or acetate into acetyl-CoA in (the cytosol of) said yeast cell when growth of said cell is observed. The invention further relates to a method of producing a fermentation production such as butanol.
Abstract:
An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided.
Abstract:
Provided are new partially hydrogenated nitrile rubbers which are distinguished by a specific ratio of viscosity to molecular weight, and also vulcanizable mixtures and vulcanizates based on said rubbers, and also the associated preparation processes. The partially hydrogenated nitrile rubbers lead to compounded formulations having advantageous processing properties in conjunction with excellent vulcanizate properties.
Abstract:
The metathetic degradation of nitrile rubber can be improved by use of a combination of metal-carbene complex catalysts with specific transition metal additives.
Abstract:
A process of degrading nitrile rubbers comprises subjecting them to a metathesis reaction in the presence of specific catalysts with increased activity.
Abstract:
A knee area protection apparatus for the protection of a vehicle occupant is provided which includes a deployment guiding plate and a support plate each having a top transverse edge, a bottom transverse edge, and side edges. The support plate is securable to the vehicle in a lower area of a seat compartment thereof. The knee area protection apparatus also includes retaining bands to retain and guide an air bag sack as it is deployed as well as to retain and guide the deployment guiding plate, which is moved by the deployment of the air bag sack.
Abstract:
The present invention relates to an aqueous pesticide microemulsion formulation including (a) at least one organic pesticide compound P, which is sparingly soluble in water and which is present in the formulation in dissolved form; (b) at least one organic solvent LM1 selected from C1-C4-alkyl lactates; (c) at least one organic solvent LM2 selected from C5-C12-alkyl lactates; (d) at least one organic solvent LM3 selected from N—(C4-C12 alkyl)pyrrolidones; (e) at least one surfactant S selected from anionic surfactants and non-ionic surfactants and mixtures thereof; and (f) water.
Abstract:
Provided are new partially hydrogenated nitrile rubbers which are distinguished by a specific ratio of viscosity to molecular weight, and also vulcanizable mixtures and vulcanizates based on said rubbers, and also the associated preparation processes. The partially hydrogenated nitrile rubbers lead to compounded formulations having advantageous processing properties in conjunction with excellent vulcanizate properties.
Abstract:
A process of degrading nitrile rubbers comprises subjecting them to a metathesis reaction in the presence of specific catalysts with increased activity.