Abstract: The invention relates to a process for the preparation of L-amino acids, especially L-threonine, in which the following steps are carried out: a) fermentation of microorganisms of the family Enterobacteriaceae which produce the desired L-amino acid and in which at least one or more genes selected from the group comprising lpd, aceE and aceF, or nucleotide sequences coding therefor, is (are) enhanced and, in particular, overexpressed, b) enrichment of the desired L-amino acid in the medium or in the cells of the bacteria, and c) isolation of the desired L-amino acid.

Abstract: The invention provides a process for the preparation of D-pantothenic acid and/or its salts or animal feed additives containing them by the fermentation of microorganisms of the family Enterobacteriaceae, especially those which already produce D-pantothenic acid, wherein the nucleotide sequence(s) coding for the ytfP and/or yjfA open reading frames (ORF) are attenuated or, in particular, switched off, individually or together, in the microorganisms.

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 invention relates to a process for the preparation of L-amino acids, in particular L-threonine.

Abstract: This invention relates to a process for the production of L-amino acids, in particular L-threonine, in which the following steps are performed: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid, in which at least one or more of the genes, selected from the group iclR and fadR, or nucleotide sequences coding therefor, are enhanced, in particular overexpressed, b) accumulation of the desired L-amino acid in the medium or in the cells of the bacteria and c) isolation of the desired L-amino acid.

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine, in which the following steps are carried out: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid and in which at least one or more of the genes chosen from the group consisting of sucA and sucB, or nucleotide sequences which code for these, is or are enhanced, in particular over-expressed, b) concentration of the desired L-amino acid in the medium or in the cells of the bacteria, and c) isolation of the desired L-amino acid.

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine.

Abstract: A process for the fermentive preparation of an L-amino acid, in particular L-threonine, comprising: a) fermentation of a microorganism of the Enterobacteriaceae family which produces the desired L-amino acid and in which the rseB gene or nucleotide sequences which code for it is enhanced, in particular, over-expressed, b) concentration of the desired L-amino acid in the medium or in the cells of the bacteria, and c) isolation or recovery of the desired L-amino acid.

Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the cysK gene is/are enhanced, in particular over-expressed.

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine.

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine.

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine, in which the following steps are carried out: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid and in which at least one or more of the genes chosen from the group consisting of rseA and rseC, or nucleotide sequences which code for these, is or are enhanced, in particular over-expressed, b) concentration of the desired L-amino acid in the medium or in the cells of the bacteria, and c) isolation of the desired L-amino acid.

Abstract: The present invention relates to a process for the production of L-amino acids by fermentation of recombinant microorganisms of the Enterobacteriaceae family, wherein

Abstract: The invention provides a process for the production of L-amino acids, in particular L-threonine, in which the following steps are performed:

Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine, in which the following steps are carried out:

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 invention relates to amino acid-producing bacteria from the family Enterobacteriaceae, in particular from the species Escherichia coli, which contain a stop codon chosen from the group amber, ochre and opal in the nucleotide sequence for the coding region of the rpoS gene and a suppressor for a stop codon chosen from the group amber suppressor, ochre suppressor and opal suppressor. This invention also relates to a process for preparing amino acids, in particular L-threonine, using these bacteria.

Abstract: The invention relates to an isolated polynucleotide having a polynucleotide sequence which codes for the sigH gene, and a host-vector system having a coryneform host bacterium in which the sigH gene is present in attenuated form and a vector which carries at least the sigH gene according to SEQ ID No 1, and the use of polynucleotides which comprise the sequences according to the invention as hybridization probes.

Abstract: A process for the enzymatic production of D-pantothenic acid and/or its salts or feedstuffs additives containing the latter by fermentation of microorganisms of the family Enterobacteriaceae, in particular those that already produce D-pantothenic acid, wherein the nucleotide sequence(s) coding for the serC gene is/are enhanced, in particular overexpressed, in the microorganisms.

Abstract: A method br the fermentative preparation of D-pantothenic acid and/or its salts or feedstuff additives containing these. Said method comprising fermentation of Escherichia coli microorganisms wherein at least one of the nucleotide sequence(s) coding for the gcvT, gcvH, and gcvP gene is overexpressed.