Abstract:
The invention relates to novel nucleic acid molecules, the use thereof in the construction of bio-engineered improved microorganisms and to methods for the production of fine chemicals, especially amino acids, with the aid of said bio-engineered improved microorganisms.
Abstract:
The invention relates to novel nucleic acid molecules, the use thereof in the construction of bio-engineered improved microorganisms and methods for the production of fine chemicals, especially amino acids with the aid of said bio-engineered improved microorganisms.
Abstract:
Isolated nucleic acid molecules, designated MP nucleic acid molecules, which encode novel MP proteins form Corynebacterium glutamicum are described. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing MP nucleic acid molecules, and host cells into which the expression vectors have been introduced. The invention still further provides isolated MP proteins, mutated MP proteins, fusion proteins, antigenic peptides and methods for the improvement of production of a desired compound from C. glutamicum based on genetic engineering of MP genes in this organism.
Abstract:
Isolated nucleic acid molecules, designated MCT nucleic acid molecules, which encode novel MCT proteins from Corynebacterium glutamicum are described. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing MCT nucleic acid molecules, and host cells into which the expression vectors have been introduced. The invention still further provides isolated MCT proteins, mutated MCT proteins, fusion proteins, antigenic peptides and methods for the improvement of production of a desired compound from C. glutamicum based on genetic engineering of MCT genes in this organism.
Abstract:
Isolated nucleic acid molecules, designated SRT nucleic acid molecules, which encode novel SRT proteins from Corynebacterium glutamicum are described. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing SRT nucleic acid molecules, and host cells into which the expression vectors have been introduced. The invention still further provides isolated SRT proteins, mutated SRT proteins, fusion proteins, antigenic peptides and methods for the improvement of production of a desired compound from C. glutamicum based on genetic engineering of SRT genes in this organism.
Abstract:
Isolated nucleic acid molecules, designated MP nucleic acid molecules, which encode novel MP proteins from Corynebacterium glutamicum are described. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing MP nucleic acid molecules, and host cells into which the expression vectors have been introduced. The invention still further provides isolated MP proteins, mutated MP proteins, fusion proteins, antigenic peptides and methods for the improvement of production of a desired compound from C. glutamicum based on genetic engineering of MP genes in this organism.
Abstract:
The present invention features improved processes and organisms for the production of methionine. The invention demonstrates that a &Dgr;metF organism or a &Dgr;metE AmetH organism, for example, mutants of C. glutamicum or E. coli, can use a methyl capped sulfide source, e.g., dimethyl disulfide (DMDS), as a source of both sulfur and a methyl group, bypassing the need for MetH/MetE and MetF activity and the need to reduce sulfate, for the synthesis of methionine. Also described in this patent are data implicating MetY (also called MetZ) as an enzyme that incorporates a methyl capped sulfide source, e.g., DMDS, into methionine. A &Dgr;metF &Dgr;metB strain of C. glutamicum can use a methyl capped sulfide source, e.g., DMDS, as a source of both sulfide and a methyl group. Furthermore, methionine production by engineered prototrophic organisms that overproduce O-acetyl-homoserine was improved by the addition of a methyl capped sulfide source, e.g., DMDS.
Abstract:
An expression unit (A) that contains several promoters is new. A new expression unit (A) comprises several promoters and includes, in the 5' to 3' direction the sequence module (I). 5'-P 1-(A x-P x) n-A y-P y-3' (I) n = integer 0-10; A x and A y = same or different chemical bonds or nucleic acid linker sequences; P 1, P x and P y = same or different promoter sequences, containing at least one RNA-polymerase binding region, and at least P y also includes a ribosome-binding, 3'-terminal segment. Independent claims are also included for: (1) an expression cassette (EC) that contains, in the 5' to 3' direction, the sequence module (II); (2) vector that contains at least one EC; (3) a genetically modified microorganism (GMO) transfected with the vector of (2) or containing EC; and (4) method for preparing biosynthetic products (X) by culturing GMO. 5'-P 1-(A x-P x) n-A y-P y-G-3' (II) G : at least one nucleic acid coding sequence functionally linked to the 5'-upstream regulatory sequence.
Abstract:
The present invention features methods of increasing the production of a fine chemical, e.g., lysine from a microorganism, e.g., Corynebacterium by way of deregulating an enzyme encoding gene, i.e., fructose-1,6-bisphosphatase. In a preferred embodiment, the invention provides methods of increasing the production of lysine in Corynebacterium glutamicum by way of increasing the expression of fructose-1,6-bisphosphatase activity. The invention also provides a novel process for the production of lysine by way of regulating carbon flux towards oxaloacetate (OAA). In a preferred embodiment, the invention provides methods for the production of lysine by way of utilizing fructose or sucrose as a carbon source.