Abstract:
The present invention relates to a modified microorganism for the highly efficient production of 1,4-butanediol, and a production method of 1,4-butanediol using the modified microorganism. The modified microorganism has improved tolerance against 1,4-butanediol by the loss or destruction of a gene encoding more than one selected from the group consisting of a transcriptional regulatory factor NCgl2886, GCN5-related N-acetyl transferase NCgl2090, hypothetical protein NCgl0224, and sugar phosphate isomerase/epimerase NCgl2956; and enables users to produce 1,4-butanediol in high efficiency even under the presence of the high concentration of 1,4-butanediol.
Abstract:
PURPOSE: An isolated protein and a composition containing the same for enhancing polysaccharide hydrolase activity are provided to enhance hydrolysis ability and to reduce the use of hydrolase. CONSTITUTION: An isolated protein enhances polysaccharide hydrolase activity and has polysaccharide binding ability. The protein contains GH45(glycoside hydrolase 45) or pollen-allergen domain. The polysaccharide hydrolase is cellulase, hemicellulase, alpha-amylase, glycoamylase, pectinase, xylanase, or cellobiase. The GH45 domain or pollen allergen domain is isolated from expansin, expansin-like protein, or bacterial protein.
Abstract:
An embodiment relates to a metabolic network model for analyzing metabolic characteristics of Kluyveromyces marxianus microbes for producing 3-hydroxypropionate (3HP) and to metabolic characteristic analyzation of the Kluyveromyces marxianus using the same. More specifically, the embodiment relates to construction of a metabolic network model of Kluyveromyces marxianus using gene-protein-biochemical response relationship, to analyzation of metabolic characteristic using the model such as metabolic engineering, and to a method for predicting a novel metabolic pathway which enhances productivity of 3HP using simulation based on the metabolic engineering. The method of the embodiment efficiently predicts productivity and cell growth speed of microbes, saves time and costs in order to optimize the novel path, and provides variant microorganisms which can provide specific metabolites.
Abstract:
PURPOSE: A composition for measuring 3,6-anhydro-L-galactose transferase activity is provided to be used in an industry. CONSTITUTION: A composition for measuring 3,6-L-AHG transferase contains NADP+ as a coenzyme, 3,6-anhydro-L-galactose(3,6-L-AHG), and buffer solution. A method for measuring the activity of 3,6-L-AHG transferase comprises: a step of reacting random enzyme extract liquid and a composition for measuring the activity of 3,6-L-AHG tranferase; a step of measuring reduction into NADPH by the reaction. A composition for quantitation of 3,6-L-AHG contains an active fraction containing 3,6-L-AHG tranferase, NADP+ as a coenzyme, and buffer solution.
Abstract:
알코올 발효저해물에 대한 저항성을 증대시키는 단리된 폴리뉴클레오티드, 이를 포함하는 벡터, 알코올 생산성 균주 및 이를 이용한 알코올의 생산방법에 관한 기술로서, 특정한 단리된 폴리뉴클레오티드가 호스트셀 내에서 과발현됨으로써 호스트셀의 알코올 발효저해물에 대한 저항성이 증대되므로 알코올 발효시 생산성이 증대될 수 있다.
Abstract:
PURPOSE: A deformed microorganism for production of 1,4-butanediol is provided to produce 1,4-BDO by a biological producing process. CONSTITUTION: A deformed microorganism for production of 1.4-butanediol comprises: an activation converting alpha-ketoglutarate or succinate into 4-hydroxybutyril-CoA ("4-HB-CoA"); and an activation converting the 4-HB-CoA into 1,4-butanediols ("1,4-BDO"). The activation converting the 4-HB-CoA into the 1,4-BDO is coded by more than one kind of genes selected from a group comprising adh1, yiaY, adh4, adhB, mdh, eutG, fucO, dhaT, aldA, eutE, adhE1, adhE2 and adh2.
Abstract:
PURPOSE: A high throughput screening system and a method of lactic acid-producing strains using two or more pH indicators are provided to quickly and accurately screen strains. CONSTITUTION: A high throughput screening system of lactic acid-producing strains contains the strain, a medium, and two or more pH indicators. The strains are a wild type strain, a mutant strain, and a recombinant strain. The pH indicators contain bromocresol green and methyl red in a ratio of 2:1-10:1. A method for screening the lactic acid-producing strains comprises: a step of adding the pH indicators to a medium; a step of culturing the strains; and a step of observing color change of the pH indicators, and measuring lactic acid production quantity.