摘要:
The invention relates to a process for the preparation of L-amino acids. The process includes fermenting the coryneform bacteria producing the desired L-amino acid, in which at least the gene coding for 6-phosphofructokinase and/or the gene coding for 1-phosphofructokinase are/is attenuated, enriching the desired L-amino acid in the medium or in the cells of the bacteria, and isolating the L-amino acid. Optionally bacteria are employed in which, in addition, further genes of the biosynthetic pathway of the desired L-amino acid are enhanced, or bacteria are employed in which the metabolic pathways that diminish the formation of the desired L-amino acid are at least partly switched off.
摘要:
An isolated polynucleotide comprising a polynucleotide sequence selected from the group consisting of a) polynucleotide which is at least 70% identical to a polynucleotide that codes for a polypeptide which comprises the amino acid sequence of SEQ ID No. 2, b) polynucleotide which codes for a polypeptide that comprises an amino acid sequence which is at least 70% identical to the amino acid sequence of SEQ ID No. 2, c) polynucleotide which is complementary to the polynucleotides of a) or b), and d) polynucleotide comprising at least 15 successive nucleotides of the polynucleotide sequence of a), b) or c), and a process for the fermentative preparation of L-amino acids using coryneform bacteria, in which at least the sahH gene is present in enhanced form, and the use of polynucleotides which contain the sequences according to the invention as hybridization probes.
摘要翻译:一种分离的多核苷酸,其包含选自以下的多核苷酸序列:a)与编码包含SEQ ID No.2的氨基酸序列的多肽的多核苷酸至少70%相同的多核苷酸,b)编码 多肽,其包含与SEQ ID No.2的氨基酸序列至少70%相同的氨基酸序列,c)与a)或b)的多核苷酸互补的多核苷酸,和d)包含至少15个连续的多核苷酸的多核苷酸 a),b)或c)的多核苷酸序列的核苷酸,以及使用棒状细菌发酵制备L-氨基酸的方法,其中至少sahH基因以增强形式存在,以及使用多核苷酸 含有根据本发明的序列作为杂交探针。
摘要:
Nucleotide sequences from coryneform bacteria which code for the cysD, cysN, cysK, cysE and cysH genes and a process for the fermentative preparation of amino acids using bacteria in which the genes mentioned are enhanced, a process for the fermentative preparation of L-amino acids using coryneform bacteria in which at least the cysD gene, the cysN gene, the cysK gene, the cysE gene and/or the cysH gene is present in enhanced form, and the use of polynucleotides which contain the sequences according to the invention as hybridization probes and a process for the preparation of an L-methionine-containing animal feedstuffs additive from fermentation broths.
摘要:
The invention relates to an isolated polynucleotide containing a polynucleotide sequence selected from the group a) polynucleotide that is at least 70% identical with a polynucleotide that codes for a polypeptide containing the amino acid sequence of SEQ ID No. 2, b) polynucleotide that codes for a polypeptide containing an amino acid sequence that is at least 70% identical with the amino acid sequence of SEQ ID No. 2, c) polynucleotide that is complementary to the polynucleotides of a) or b), and d) polynucleotide containing at least 15 consecutive nucleotides of the polynucleotide sequence of a), b) or c), and to a process for the production of L-amino acids by fermentation using coryneform bacteria in which at least the citE gene is present in attenuated form, and to the use of polynucleotides containing the sequences of the invention as hybridization probes.
摘要翻译:本发明涉及含有多核苷酸序列的多核苷酸序列,该多核苷酸序列选自a)与编码含有SEQ ID No.2的氨基酸序列的多肽的多核苷酸至少70%相同的多核苷酸,b)编码 对于含有与SEQ ID No.2的氨基酸序列至少70%相同的氨基酸序列的多肽,c)与a)或b)的多核苷酸互补的多核苷酸,以及d)至少含有 a),b)或c)的多核苷酸序列的15个连续核苷酸,以及通过发酵使用其中至少有citE基因以减毒形式存在的棒状细菌产生L-氨基酸的方法, 使用含有本发明序列的多核苷酸作为杂交探针。
摘要:
The invention relates to an isolated polynucleotide having a polynucleotide sequence which codes for the dep34 gene, and a host-vector system having a coryneform host bacterium in which the dep34 gene is present in attenuated form and a vector which carries at least the dep34 gene according to SEQ ID No 1, and the use of polynucleotides which comprise the sequences according to the invention as hybridization probes.
摘要:
The invention relates to an isolated polynucleotide from Corynebacterium glutamicum having a polynucleotide sequence which codes for the dep34 efflux protein, and a host-vector system having a coryneform host bacterium in which the dep34 gene is present in attenuated form and a vector which carries at least the dep34 gene according to SEQ ID NO: 1, and the use of polynucleotides which comprise the sequences according to the invention as hybridization probes.
摘要翻译:本发明涉及具有编码dep34流出蛋白的多核苷酸序列的谷氨酸棒杆菌分离的多核苷酸,以及具有其中dep34基因以减毒形式存在的棒状细胞宿主细菌的宿主 - 载体系统和至少携带至少 根据SEQ ID NO:1的dep34基因,以及使用包含根据本发明的序列的多核苷酸作为杂交探针。
摘要:
Nucleotide sequences from coryneform bacteria which code for the cysD, cysN, cysK, cysE and cysH genes and a process for the fermentative preparation of amino acids using bacteria in which the genes mentioned are enhanced, a process for the fermentative preparation of L-amino acids using coryneform bacteria in which at least the cysD gene, the cysN gene, the cysK gene, the cysE gene and/or the cysH gene is present in enhanced form, and the use of polynucleotides which contain the sequences according to the invention as hybridization probes and a process for the preparation of an L-methionine-containing animal feedstuffs additive from fermentation broths.
摘要:
The invention provides nucleotide sequences from Coryneform bacteria which code for the RodA protein and a process for the fermentative preparation of amino acids using bacteria in which the rodA gene is enhanced.
摘要:
The invention provides nucleotide sequences from Coryneform bacteria coding for the dep33 efflux protein and a process for the fermentative preparation of amino acids using bacteria in which the dep33 efflux protein is attenuated.
摘要:
A process for the production of an L-amino acid wherein coryneform bacteria (e.g. Coryneform glutamicum) in which expression of the mqo gene coding for malate quinone oxidoreductase is attenuated are fermented to produce a desired amino acid, and the amino acid is concentrated in the medium or cells and isolated. Optionally, further genes in the biosynthetic pathway of the desired amino acid are enhanced, and/or metabolic pathways that reduce formation of the amino acid are suppressed.