Abstract:
The present invention relates to a novel method for the fermentative production of gamma-aminobutyric acid (GABA) by cultivating a recombinant micro-organism expressing an enzyme having a glutamate decarboxylase activity. The present invention also relates to corresponding recombinant hosts, recombinant vectors, expression cassettes and nucleic acids suitable for preparing such hosts as well as to a method for preparing polyamides making use of GABA as obtained fermentative production.
Abstract:
The present invention relates to a method of producing methionine in Coryneform bacteria in which enzymes of the pentose phosphate pathway are over - expressed. The present invention also relates to Coryneform bacteria for producing methionine in which at least two enzymes of the pentose phosphate pathway are over - expressed.
Abstract:
The present invention relates to microorganisms and processes for the efficient preparation of L-methionine. In particular, the present invention relates to processes in which the amount of serine available for the metabolism of the microorganism is increased.
Abstract:
Process for the production of cadaverine by constructing a recombinant microorganism which has a deregulated lysine decarboxylase gene and at least one deregulated gene selected from the group (i) which consists of aspartokinase, aspartatesemialdehyde dehydrogenase, dihydrodipicolinate synthase, dihydrodipicolinate reductase, tetrahy- drodipicolinate succinylase, succinyl-amino-ketopimelate transaminase, succinyl- diamino-pimelate desuccinylase, diaminopimelate epimerase, diaminopimelate dehy¬ drogenase, arginyl-tRNA synthetase, diaminopimelate decarboxylase, pyruvate car¬ boxylase, phosphoenolpyruvate carboxylase, glucose-6-phosphate dehydrogenase, transketolase, transaldolase, 6-phosphogluconolactonase, fructose 1 ,6-biphosphatase, homoserine dehydrogenase, phophoenolpyruvate carboxykinase, succinyl-CoA syn¬ thetase, methylmalonyl-CoA mutase, provided that if aspartokinase is deregulated as gene (i) at least a second gene (i) other than aspartokinase has to be deregulated, and cultivating said microorganism.
Abstract:
Process for the production of -lysine by constructing a recombinant microorganism which has a deregulated lysine 2,3-aminomutase gene and at least one deregulated gene selected from the group (i) which consists of aspartokinase, aspartatesemialdehyde dehydrogenase, dihydrodipicolinate synthase, dihydrodipicolinate reductase, tetrahydrodipicolinate succinylase, succinyl-amino-ketopimelate transaminase, succinyl-diamino-pimelate desuccinylase, diaminopimelate epimerase, diaminopimelate dehydrogenase, arginyl-tRNA synthetase, diaminopimelate decarboxylase, pyruvate carboxylase, phosphoenolpyruvate carboxylase, glucose-6-phosphate dehydrogenase, transketolase, transaldolase, 6-phosphogluconolactonase, fructose 1,6-biphosphatase, homoserine dehydrogenase, phophoenolpyruvate carboxykinase, succinyl-CoA synthetase, methylmalonyl-CoA mutase, provided that if aspartokinase is deregulated as gene (i) at least a second gene (i) other than aspartokinase has to be deregulated, and cultivating said microorganism.
Abstract:
Die vorliegende Erfindung betrifft Mehrfachpromotoren und diese enthaltende Expressionseinheiten; deren Verwendung zur Regulation der Transkription und Expression von Genen; Expressionskassetten, die solche Mehrfachpromotoren oder Expressionseinheiten umfassen; Vektoren, welche solche Expressionskassetten enthalten; genetisch veränderte Mikroorganismen, welche solche Vektoren und/oder Expressionseinheiten enthalten; sowie Verfahren zur Herstellung von biosynthetischen Produkten durch Kultivierung der genetisch veränderten Mikroorganismen.
Abstract:
The present invention is directed to a method utilizing a microorganism with reduced isocitrate dehydrogenase activity for the production of methionine.
Abstract:
The present invention relates to nulceotide sequences encoding enzymatically active cobalamin-methionine synthase and functional fragments thereof being modified in comparison to the respective wild-type enzyme such that said enzymes show reduced product inhibition by methionine. The present invention also relates to polypeptides being encoded by such nucleotide sequences and host cells comprising such nucleotide sequences. Furthermore, the present invention relates to methods for producing methionine in host organisms by making use of suchnucleotide sequences.