Abstract:
본 발명은 트랜스아미나제의 조기질 순환을 이용한 광학 활성 아미노산을 제조하는 방법에 관한 것으로서, 알파 트랜스아미나제에 의해서 케토산을 아미노산으로 전환시키는 반응과, 오메가 트랜스아미나제에 의해서 아민 기질의 아민을 전이시키는 반응을 아미노산 조기질에 의해서 커플링시켜 순환 반응시키는 것을 특징으로 하며, 본 발명은 종래 트랜스아미나제의 낮은 반응 평형상수 문제를 해결하여 고순도의 다양한 광학 활성 아미노산을 고효율로 생산할 수 있어 다양한 아미노산의 생산 공정에 산업적으로 사용될 수 있다. 또한, 높은 반응성과 안정성을 가지는 본 발명에 의해서 제약 전구체로 사용되는 다양한 비천연 아미노산을 손쉽게 생산할 수 있어 제약, 식품 첨가물, 각종 동물 사료 제조 분야에서 활용할 수 있다.
Abstract:
The present invention relates to a cell suitable for production of one or more fermentation product from a sugar composition comprising glucose, galactose, arabinose and xylose, wherein the cell comprises two to fifteen copies of one or more xylose isomerase gene or two to fifteen copies of one or more xylose reductase and xylitol 10 dehydrogenase, and two to ten copies of araA, araB and araD, genes, wherein these genes are integrated into the cell genome.
Abstract:
The present invention relates to methods for degrading or converting a cellulose-containing material, comprising: treating the cellulose-containing material with an effective amount of a cellulolytic enzyme composition comprising a polypeptide having cellulolytic enhancing activity, and one or more (several) components selected from the group consisting of a CEL7 polypeptide having endoglucanase activity, a CEL12 polypeptide having endoglucanase activity, a CEL45 polypeptide having endoglucanase activity, a CEL7 polypeptide having cellobiohydrolase activity with a cellulose binding domain, and a CEL7 polypeptide having cellobiohydrolase activity without a cellulose binding domain. The present invention also relates to such cellulolytic enzyme compositions.
Abstract:
The present invention relates to methods for degrading or converting a cellulose-containing material, comprising: treating the cellulose-containing material with an effective amount of a cellulolytic enzyme composition comprising a polypeptide having cellulolytic enhancing activity, and one or more (several) components selected from the group consisting of a CEL7 polypeptide having endoglucanase activity, a CEL12 polypeptide having endoglucanase activity, a CEL45 polypeptide having endoglucanase activity, a CEL7 polypeptide having cellobiohydrolase activity with a cellulose binding domain, and a CEL7 polypeptide having cellobiohydrolase activity without a cellulose binding domain. The present invention also relates to such cellulolytic enzyme compositions.
Abstract:
Actinobacillus succinogenes genes and methods of using the genes in genetically engineered A. succinogenes so as to improve production of chemicals such as succinate, fumarate, malate, 5-aminolevulinate, 2-oxoglutarate, glutamate, and aspartate. The genetically engineered A. succinogenes strains are capable of overexpressing C4 enzymes. The genetically engineered A. succinogenes can have one or more gene knockouts or modifications that inhibit C3 enzymes. The fluxes supplying substrate to the C4 pathway can also be improved in some of the genetically engineered A. succinogenes.
Abstract:
Actinobacillus succinogenes genes and methods of using the genes in genetically engineered A. succinogenes so as to improve production of chemicals such as succinate, fumarate, malate, 5-aminolevulinate, 2-oxoglutarate, glutamate, and aspartate. The genetically engineered A. succinogenes strains are capable of overexpressing C4 enzymes. The genetically engineered A. succinogenes can have one or more gene knockouts or modifications that inhibit C3 enzymes. The fluxes supplying substrate to the C4 pathway can also be improved in some of the genetically engineered A. succinogenes.
Abstract:
The present invention relates to increasing the production of aspartate or aspartate-derived metabolites by boosting the activity of the glyoxylate shunt. This is accomplished by increasing the activity of glyoxylate shunt specific enzymes and decreasing the activity of reactions consuming glyoxylate and its precursors.
Abstract:
A process for efficiently and industrially advantageously producing an N-formylamino acid by reacting an amino acid or its salt with formamide and/or methyl formate in the presence of a base. A process for efficiently and industrially advantageously producing N-formyl- alpha -aspartylphenylalanine methyl ester, which is a precursor of aspartame, by an enzymatic fusion reaction of N-formylaspartic acid with phenylalanine methyl ester wherein the concentration of N-formylaspartic acid is specified or the reaction is carried out in the presence of a trialkyl phosphate. A process for efficiently and industrially advantageously producing N-formyl- alpha -aspartylphenylalanine methyl ester having a high purity by adjusting the pH value of a phenylalanine methyl ester adduct of N-formyl- alpha -aspartylphenylalanine methyl ester.
Abstract:
The invention relates to 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 enzyme and/or the pyruvate-carboxylase gene expression of a microorganism which produces the corresponding amino acid. In addition, the invention relates to a pyruvate-carboxylase gene and additional agents which can be used in the inventive method.