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    • 1. 发明授权
    • Process for production of L-amino acid
    • 生产L-氨基酸的方法
    • US08859241B2
    • 2014-10-14
    • US13520954
    • 2011-01-07
    • Mikiro HayashiKazuhiko Tabata
    • Mikiro HayashiKazuhiko Tabata
    • C12P13/04C12N9/00C12N1/20C12N15/00C07H21/02C12P13/14C12R1/19
    • C12P13/04C12P13/14C12R1/19C12Y301/02012
    • Provided is a novel process for producing an L-amino acid using a microorganism belonging to the genus Escherichia. According to the present invention, a process for producing an L-amino acid comprising; culturing a microorganism in which an activity of the protein of any of the following [1]-[3] is increased compared with that of the parent strain in a medium, producing and accumulating the L-amino acid in the medium, and recovering the L-amino acid from the medium: [1] a protein comprising the amino acid sequence shown in SEQ ID NO: 2 [2] a protein consisting of an amino acid sequence in which one or more amino acids are deleted, substituted or added in the amino acid sequence shown in SEQ ID NO: 2, and having YeiG activity [3] a protein consisting of an amino acid sequence having 80% or more homology to the amino acid sequence shown in SEQ ID NO: 2, and having YeiG activity.
    • 提供了使用属于埃希氏菌属的微生物来生产L-氨基酸的新方法。 根据本发明,制备L-氨基酸的方法包括: 培养下述[1] - [3]中任一项所述的蛋白质的活性与培养基中的亲本菌株相比增加的微生物,培养基中产生和积累L-氨基酸,并回收 来自培养基的L-氨基酸:[1]包含SEQ ID NO:2所示氨基酸序列的蛋白质[2]一种蛋白质,其由一个或多个氨基酸缺失,取代或加入的氨基酸序列组成 SEQ ID NO:2所示的氨基酸序列,并且具有YeiG活性[3]由与SEQ ID NO:2所示的氨基酸序列具有80%以上同源性的氨基酸序列组成的蛋白质,并具有YeiG活性 。
    • 2. 发明授权
    • Process for producing L-amino acid
    • 生产L-氨基酸的方法
    • US08623619B2
    • 2014-01-07
    • US13148564
    • 2010-02-09
    • Kazuhiko TabataAkihiro Senoo
    • Kazuhiko TabataAkihiro Senoo
    • C12P13/04C12P13/22C12N9/00C12N1/20C12N15/00C07H21/04
    • C12P13/06C07K14/195C12P13/08C12P13/12C12P13/14C12P13/222
    • The present invention provides a method of improving efficiency of a fermentative production of an L-amino acid. To be specific, the present invention provides a process for producing a L-amino acid, comprising culturing a microorganism wherein the activity of the protein described in any one of (1) to (3) below is higher than that of the parent strain in a medium to produce the L-amino acid and accumulate the L-amino acid in the medium, and then collecting the L-amino acid from the medium: (1) a protein comprising the amino acid sequence shown by any one of SEQ ID NOS:2, 4, 6 and 8 (2) a protein consisting of the amino acid sequence resulting from deletion, substitution or addition of one or more amino acids in the amino acid sequence shown in any one of SEQ ID NOS:2, 4, 6 and 8, and having L-amino acid transport activity (3) a protein consisting of the amino acid sequence having 80% or more homology to the amino acid sequence shown in any one of SEQ ID NOS:2, 4, 6 and 8, and having L-amino acid transport activity.
    • 本发明提供了提高L-氨基酸的发酵生产效率的方法。 具体而言,本发明提供了L-氨基酸的制造方法,其特征在于,含有下述(1)〜(3)中任一项所述的蛋白质的活性高于母体菌株的活性的微生物 产生L-氨基酸并在培养基中积累L-氨基酸的培养基,然后从培养基中收集L-氨基酸:(1)包含SEQ ID NOS中任一个所示的氨基酸序列的蛋白质 2,4,6和8(2)由SEQ ID NO:2,4,4,7所示的氨基酸序列中的一个或多个氨基酸的缺失,取代或添加得到的氨基酸序列组成的蛋白质, 6和8,并且具有L-氨基酸转运活性(3)由与SEQ ID NO:2,4,6和8中任一个所示的氨基酸序列具有80%或更高同源性的氨基酸序列组成的蛋白质 并具有L-氨基酸转运活性。
    • 8. 发明授权
    • Process for producing N-acetylneuraminic acid
    • N-乙酰神经氨酸生产方法
    • US07579175B2
    • 2009-08-25
    • US10338872
    • 2003-01-09
    • Satoshi KoizumiKazuhiko TabataTetsuo EndoAkio Ozaki
    • Satoshi KoizumiKazuhiko TabataTetsuo EndoAkio Ozaki
    • C12P7/58C12P1/00C12Q1/00C12N9/24C12N1/20C02F3/34C07K14/00C07H21/04
    • C12P19/26
    • The present invention provides a process for economically producing N-acetylneuraminic acid without using expensive materials such as pyruvic acid and phosphoenolpyruvic acid. The process comprises: allowing (i) a culture of a microorganism having N-acetylneuraminic acid aldolase activity or N-acetylneuraminic acid synthetase activity, or a treated matter of the culture, (ii) a culture of a microorganism capable of producing pyruvic acid or a treated matter of the culture, or a culture of a microorganism capable of producing phosphoenolpyruvic acid or a treated matter of the culture, (iii) N-acetylmannosamine, and (iv) an energy source which is necessary for the formation of pyruvic acid or phosphoenolpyruvic acid to be present in an aqueous medium to form and accumulate N-acetylneuraminic acid in the aqueous medium; and recovering N-acetylneuraminic acid from the aqueous medium.
    • 本发明提供了经济地生产N-乙酰神经氨酸的方法,而不使用昂贵的材料如丙酮酸和磷酸烯醇丙酮酸。 该方法包括:(i)具有N-乙酰神经氨酸醛缩酶活性或N-乙酰神经氨酸合成酶活性的微生物的培养物或培养物的处理物质,(ii)能够产生丙酮酸的微生物培养物或 培养物的处理物质,或能够产生磷酸烯醇丙酮酸或培养物处理物质的微生物的培养物,(iii)N-乙酰甘露糖胺,和(iv)形成丙酮酸所必需的能量源或 磷酸烯醇式丙酮酸存在于水性介质中以在水性介质中形成并积聚N-乙酰神经氨酸; 并从水性介质中回收N-乙酰神经氨酸。
    • 9. 发明授权
    • Processes for producing sugar nucleotides and complex carbohydrates
    • 生产糖核苷酸和复合碳水化合物的方法
    • US06964858B2
    • 2005-11-15
    • US09907574
    • 2001-07-19
    • Satoshi KoizumiKatsutoshi SasakiTetsuo EndoKazuhiko TabataAkio Ozaki
    • Satoshi KoizumiKatsutoshi SasakiTetsuo EndoKazuhiko TabataAkio Ozaki
    • C12P19/30C12P1/00C07H21/04C12N9/00
    • C12P19/30
    • This invention relates to a process for producing a sugar nucleotide, in which a) a culture broth of a microorganism capable of producing NTP from a nucleotide precursor, or a treated product of the culture broth, and b) a culture broth of a microorganism capable of producing a sugar nucleotide from a sugar and NTP, or a treated product of the culture broth, are used as enzyme sources; a process for producing a complex carbohydrate, in which the above-described a) and b) and c) a culture broth of a microorganism, an animal cell or an insect cell capable of producing a complex carbohydrate from a sugar nucleotide and a complex carbohydrate precursor, or a treated product of the culture broth, are used as enzyme sources; a process for producing a complex carbohydrate, in which a culture broth of a microorganism, an animal cell or an insect cell capable of producing a complex carbohydrate from a sugar nucleotide and a complex carbohydrate precursor, or a treated product of the culture broth, is as an enzyme source; and a process for producing N-acetylglucosamine-1-phosphate, in which a culture broth of a microorganism having strong galactokinase activity, or a treated product of the culture broth, is used as the enzyme source.
    • 本发明涉及一种制备糖核苷酸的方法,其中a)从核苷酸前体产生NTP的微生物的培养液或培养液的处理产物,和b)能够培养的微生物的培养液 从糖和NTP生产糖核苷酸或培养液的处理产物用作酶源; 复合碳水化合物的制造方法,其中上述a)和b)和c)能够从糖核苷酸和复合碳水化合物制备复合碳水化合物的微生物,动物细胞或昆虫细胞的培养液 前体或培养液的处理产物用作酶源; 复合碳水化合物的制造方法,其中可以从糖核苷酸和复合碳水化合物前体生产复合碳水化合物的微生物,动物细胞或昆虫细胞的培养液或培养液的处理产物是 作为酶源; 使用其中具有强烈的半乳糖激酶活性的微生物的培养液或培养液的处理产物的N-乙酰葡糖胺-1-磷酸的生产方法作为酶源。