Abstract: A method for producing an L-amino acid comprising: a) cultivating in a medium containing glycerol a recombinant coryneform bacteria which produces the desired L-amino acid and which expresses at least one heterologous polynucleotide of glycerol metabolism, such as glpA, glpB, glpC, glpD, glpE, glpF, glpG, glpK, glpQ, gipT, glpX, gldA, dhaK, dhaL, dhaM, dhaR, fsa, and/or talC, and b) isolating the desired L-amino acid. Preferably, the pathways producing the desired L-amino acid in the coryneform bacteria are amplified.

Abstract: The invention relates to a method for producing L-valine and to a suitable microorganism. The inventive method is characterized by preferably enhancing the transaminase C activity of a coryneform bacterium, especially Corynebacterium glutamicum. The organisms so modified have a yield in L-valine which is 35.8% higher than that of non-modified organisms.

Abstract: This invention relates to the nucleotide sequence of coryneform bacteria coding for proteins which are involved in L-serine metabolism with reduced and switched off L-serine dehydratase activity. The invention also relates to microorganisms used in methods for producing L-serine.

Abstract: The invention relates to recombinant microorganisms in which polynucleotides which code for lysine decarboxylase are enhanced and, using which, cadaverine (1,5-diaminopentane) is produced fermentatively, with the carbon source used preferably being renewable raw materials such as, for example, glucose, sucrose, molasses and the like.

Abstract: L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.

Abstract: The invention relates to a method for production of L-amino acids by fermentation. According to the invention, the activity of the alanine transaminase is ether reduced or inhibited, whereby in particular the amino acids L-valine, L-lysine and L-isoleucine are produced with increased yield. Furthermore, the nucleic acids according to seq. No. 1 from position 101 to 1414 are identified as the sequence coding for the alanine transaminase gene. Use of the above permits the production of L-alanine.

Abstract: The invention relates to nucleotide sequences of coryneform bacteria that encode proteins that are involved in the biosynthesis of L-serine and to a method for producing L-serine. According to the invention, at least 79 amino acids at the C terminus of the wild-type serA sequence are deleted, thereby producing a 3-phosphoglycerate dehydrogenase having a reduced feedback inhibition by L-serine vis-à-vis the wild-type sequence.

Abstract: The present invention relates to a process for the microbial production of L-valine in which the dihydroxy acid-synthase (ilvD) activity and/or the ilvD gene expression is intensified in a microorganism. As an alternative or in combination with this, the acetohydroxy acid-synthase (ilvBN) activity and isomeroreductase (ilvC) activity and/or the ilvBNC gene expression are intensified in a microorganism. The process according to the invention preferably makes use of microorganisms in which the activity of at least one enzyme that is involved in a metabolic pathway that reduces the formation of L-valine is weakened or eliminated. Thus, for instance, the process according to the invention preferably makes use of microorganisms having a defect mutation in the threonine dehydratase (ilvA) gene and/or a defect mutation in one or more genes of the pantothenate synthesis.

Abstract: The folic acid concentration in amino acid producing organisms is reduced or completely removed in order to increase the production of L-serine. The enzymes and genes, which are involved in the biosynthesis of folic acid, can be completely excluded or at least reduced in activity. In a preferred embodiment, SEQ ID NOs: 1-7 are utilized.

Abstract: This invention relates to the nucleotide sequence of coryneform bacteria coding for proteins which are involved in L-serine metabolism with reduced and switched off L-serine dehydratase activity. The invention also relates to microorganisms used in methods for producing L-serine.

Abstract: The invention relates to a method for producing L-amino acids in which the following steps are carried out: a) the recombinant coryneform bacteria which produce the desired L-amino acid and in which at least one or several of the heterologous polynucleotides of the glycerol metabolism, selected among the group comprising glpA, glpB, glpC, glpD, glpE, glpF, glpG, glpK, glpQ, glpT, glpX, gldA, dhaK, dhaL, dhaM, dhaR, fsa, and talC, is/are expressed are cultivated in a medium containing glycerol or one or several other optional C sources in conditions in which the desired L-amino acid is enriched in the medium or the cells; and, optionally, b) the desired L-amino acid is isolated, all or fractions (>0 to 100 percent) of the components of the fermentation broth and/or biomass optionally remaining in the final product.

Abstract: The invention relates to a method for producing L-valine and to a suitable microorganism. The inventive method is characterized by preferably enhancing the transaminase C activity of a coryneform bacterium, especially Corynebacteriuim glutamicum. The organisms so modified have a yield in L-valine which is 35.8% higher than that of non-modified organisms.

Abstract: A pyruvate carboxylase gene having SEQ ID NO:1 as well as an amino acid sequence having SEQ ID NO:2 expressed by the pyruvate carboxylate gene are disclosed. Also disclosed is a method for microbial production of amino acids of the aspartate and/or glutamate family in which the pyruvate carboxylase activity is increased by genetically changing the pyruvate carboxylase gene having SEQ ID NO:1 through expression of a microorganism which produces the corresponding amino acid having SEQ ID NO:2.

Abstract: A method is disclosed for microbially producing L-amino acids of aspartate and/or glutamate families which comprises the step of: culturing a strain of Escherichia coli that produces said L-amino acids in a medium suitable for the production of an L-amino acid, whereby said Escherichia coli strain is transformed with a gene construct comprising a polynucleotide encoding an enzyme with pyruvate carboxylase activity.

Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.

Abstract: A process for the microbial production of aromatic amino acids and other metabolites of the aromatic amino acid biosynthetic pathway The invention relates to a process for the microbial production of aromatic amino acids and other metabolites of the aromatic amino acid biosynthetic pathway. Microbially produced substances such as fine chemicals, in particular aromatic amino acids or metabolites of the aromatics biosynthetic pathway, are of great economic interest, and the need for amino acids, for example, continues to increase. The inventors found that, after introducing a pyc gene sequence into microorganisms, it was possible to produce aromatic amino acids and also metabolites of the aromatic biosynthetic pathway in an improved manner. The process of the invention is particularly suitable for producing L-phenylalanine.

Abstract: The invention relates to the nucleotide sequences of coryneform bacteria coding for proteins which are involved in L-serine metabolism with reduced and switched off L-serine dehydratase. Said invention also relates to micro-organisms and to methods for producing L-serine.

Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.

Abstract: The present invention relates to nucleotide sequences of coryneform bacteria, coding for proteins involved in the bio-synthesis of L-serine and to methods for the isolation thereof. The invention further relates to an improved method for the production of L-serine. In addition, the present invention relates to the use of L-serine in the food, animal feed and/or pharmaceutical industries or in human medicine.

Abstract: The invention relates to nucleotide sequences of coryneform bacteria that encode proteins that are involved in the biosynthesis of L-serine and to a method for producing L-serine. According to the invention, at least 79 amino acids at the C terminus of the wild-type serA sequence are deleted, thereby producing a 3-phosphoglycerate dehydrogenase having a reduced feedback inhibition by L-serine vis-à-vis the wild-type sequence.