摘要:
A promoter for a formate dehydrogenase gene from Candida boidinii, substantially comprising a 190 bp or more continuous nucleotide sequence selected from the nucleotide sequence of SEQ ID NO:1; a promoter for a formate dehydrogenase gene from Candida boidinii, substantially comprising the nucleotide sequence of SEQ ID NO:1, 48, 49 or 50; a terminator for a formate dehydrogenase gene from Candida boidinii, substantially comprising the nucleotide sequence of SEQ ID NO:2; a gene expression cassette comprising said promoter, a heterologous gene and said terminator; a recombinant expression vector comprising said gene expression cassette; a transformant transformed with said recombinant expression vector; a process for producing an expression product of a heterologous gene, which comprises culturing said transformant and recovering an expression product of a heterologous gene from the culture.
摘要翻译:PCT No.PCT / JP96 / 02597 371日期:1997年5月9日 102(e)日期1997年5月9日PCT提交1996年9月12日PCT公布。 公开号WO97 / 10345 日期:1997年3月20日来自布氏念珠菌的甲酸脱氢酶基因的启动子,基本上包含选自SEQ ID NO:1的核苷酸序列的190bp以上的连续核苷酸序列; 来自布氏念珠菌的甲酸脱氢酶基因的启动子,基本上包含SEQ ID NO:1,49,49或50的核苷酸序列; 来自布氏念珠菌的甲酸脱氢酶基因的终止子,基本上包含SEQ ID NO:2的核苷酸序列; 包含所述启动子,异源基因和所述终止子的基因表达盒; 包含所述基因表达盒的重组表达载体; 用所述重组表达载体转化的转化体; 用于产生异源基因的表达产物的方法,其包括培养所述转化体并从培养物中回收异源基因的表达产物。
摘要:
This invention relates to a promoter for dihydroxyacetone synthase gene from Candida boidinii; an expression cassette or vector comprising the promoter and a heterologous gene; a transformant transformed with this vector; and a method for producing an expression product of the heterologous gene which comprises culturing the transformant to express the heterologous gene.
摘要:
The invention provides a novel transferase that acts on a saccharide, as a substrate, composed of at least three sugar units wherein at least three glucose residues on the reducing end are linked α-1,4 so as to transfer the α-1,4 lingages to a α-1, α-1 linkages; a process for producing the transferase; a gene coding for the same; and a process for producing an oligosaccharide by using the same. Also provided are a novel amylase that has a principal activity of acting on a saccharide, as a substrate, composed of at least three sugar units wherein at least three sugar units on the reducing end side are glucose units and the linkage between the first and the second glucose units is α-1, α-1 while the linkage between the second and the third glucose units is α-1,4 so as to liberate α, α-trehalose by hydrolyzing the α-1,4 linkage and another activity of hydrolyzing the α-1,4 linkage within the molecular chain of the substrate and that liberates disaccharides and/or monosaccharides as the principal final products; a process for producing the amylase; a gene coding for the same; and a process for producing α, α-trehalose by using a combination of the transferase and the amylase.
摘要:
The present invention relates to a DNA comprising the nucleotide sequence shown in SEQ ID NO:1, or a DNA for enhancing promoter activity which comprises a nucleotide sequence having deletions, substitutions, additions or insertions of one or more nucleotides in the nucleotide sequence shown in SEQ ID NO:1; to a mutant promoter comprising one or more fragments of the DNA; to a recombinant expression vector comprising the mutant promoter together with a heterologous gene; to a transformant prepared by transforming a host cell with the vector; to a process for preparing an expression product, comprising culturing the transformant in a medium, and recovering the expression product of a heterologous gene from the obtained culture; and to a method for enhancing a promoter activity, characterized in that one or more fragments of the above-defined DNA are located at at least one position preceding, following or within a selective promoter in a forward or reverse direction.
摘要翻译:本发明涉及包含SEQ ID NO:1所示核苷酸序列的DNA或用于增强启动子活性的DNA,其包含在SEQ ID NO:1所示的核苷酸序列中具有一个或多个核苷酸的缺失,替换,添加或插入的核苷酸序列 SEQ ID NO:1; 涉及包含DNA的一个或多个片段的突变启动子; 涉及包含突变启动子与异源基因的重组表达载体; 通过用载体转化宿主细胞制备的转化体; 涉及一种制备表达产物的方法,包括在培养基中培养转化体,并从获得的培养物中回收异源基因的表达产物; 以及用于增强启动子活性的方法,其特征在于,上述定义的DNA的一个或多个片段位于选择性启动子前后的至少一个位置,在前向或反向方向。
摘要:
The present invention provides a method for stabilizing an antiallergic activity of lactic acid bacteria against a high-temperature treatment and a composition for the stabilization, which can maintain an antiallergic activity of lactic acid bacteria against a high-temperature treatment, and foods and drinks such as drinks having a stabilized antiallergic activity of lactic acid bacteria, and a method for producing the same. The antiallergic activity of lactic acid bacteria can be maintained stably by making the lactic acid bacteria and polyphenols coexist, even when high-temperature treatments are conducted. As polyphenols used in the present invention, polyphenols extracted from a plant such as green tea-derived polyphenols can be used. In the present invention, various lactic acid bacteria having an antiallergic activity can be used, and in particular, lactic acid bacteria having a high antiallergic activity can be advantageously used as such lactic acid bacteria. The method of the present invention can be applied to foods and drinks for which high-temperature heating treatments are conducted in the process of their production, distribution, or when they are taken.
摘要:
This invention is to provide a process for producing a glycoprotein comprising a mammalian type sugar chain, characterized in that the process comprises introducing an α-1,2-mannosidase gene into a methylotrophic yeast having a mutation of a sugar chain biosynthesizing enzyme gene, so that the α-1,2-mannosidase gene is expressed under the control of a potent promoter in the yeast; culturing in a medium the methylotrophic yeast cells with a heterologous gene transferred thereinto; and obtaining the glycoprotein comprising a mammalian type sugar chain from the culture. Using the newly created methylotrophic yeast having a sugar chain mutation, a neutral sugar chain identical with a high mannose type sugar chain produced by mammalian cells such as human cells, or a glycoprotein comprising such a neutral sugar chain, can be produced in a large amount at a high purity. By introducing a mammalian type sugar chain biosynthesizing gene into the above-described mutant, a mammalian type sugar chain, such as a hybrid or complex, or a protein comprising a mammalian type sugar chain can be efficiently produced.
摘要:
This invention is to provide a process for producing a glycoprotein comprising a mammalian type sugar chain, characterized in that the process comprises introducing an α-1,2-mannosidase gene into a methylotrophic yeast having a mutation of a sugar chain biosynthesizing enzyme gene, so that the α-1,2-mannosidase gene is expressed under the control of a potent promoter in the yeast; culturing in a medium the methylotrophic yeast cells with a heterologous gene transferred thereinto; and obtaining the glycoprotein comprising a mammalian type sugar chain from the culture. Using the newly created methylotrophic yeast having a sugar chain mutation, a neutral sugar chain identical with a high mannose type sugar chain produced by mammalian cells such as human cells, or a glycoprotein comprising such a neutral sugar chain, can be produced in a large amount at a high purity. By introducing a mammalian type sugar chain biosynthesizing gene into the above-described mutant, a mammalian type sugar chain, such as a hybrid or complex, or a protein comprising a mammalian type sugar chain can be efficiently produced.
摘要:
The object of the present invention is to provide an antiallergic composition useful to prevention/treatment of allergy, its preparation method, and its use as foods or drinks or the like. As for means for solving the object, it is to provide an antiallergic composition comprising as active ingredients the lactic acid bacteria showing equal interleukin 12 production level compared to when Lactobacillus paracasei KW 3110 strain is used as the lactic acid bacteria to be tested, or showing 60% or more of interleukin 12 production level compared to when Lactobacillus paracasei KW 3110 strain is used, and showing less than 50% of interleukin 4 production level of a control wherein the lactic acid bacteria are not added, in case lymphocytes derived from mouse spleen sensitized with ovalbumin are suspended in a medium containing ovalbumin, and cultured by adding the lactic acid bacteria to be tested. The present invention encompasses a method for obtaining the lactic acid bacteria with antiallergic activity being the active ingredients of the antiallergic composition of the present invention, and the use of the antiallergic composition of the present invention to foods and beverages and the like, and further by formulation, the use as antiallergic agent administered orally.