Method for producing dipeptides
    24.
    发明申请
    Method for producing dipeptides 失效
    二肽生产方法

    公开(公告)号:US20060177893A1

    公开(公告)日:2006-08-10

    申请号:US11330076

    申请日:2006-01-12

    IPC分类号: C12P21/06 C12N1/21 C07K5/04

    CPC分类号: C12P21/02

    摘要: The present invention provides a method for producing a dipeptide from starting materials that are available at low costs through a route industrially advantageous and simple. Dipeptides are produced from amino acid esters and amino acids by using a culture of a microbe having an ability to produce a dipeptide from an amino acid ester and an amino acid, microbial cells separated from the culture, or treated microbial cell product.

    摘要翻译: 本发明提供了一种通过工业上有利且简单的途径以低成本获得的起始材料制备二肽的方法。 通过使用具有从氨基酸酯和氨基酸产生二肽的能力的微生物培养物,从培养物分离的微生物细胞或经处理的微生物细胞产物,由氨基酸酯和氨基酸产生二肽。

    Method for producing tripeptides and/or peptides longer than tripeptides
    27.
    发明授权
    Method for producing tripeptides and/or peptides longer than tripeptides 失效
    生产长于三肽的三肽和/或肽的方法

    公开(公告)号:US07338780B2

    公开(公告)日:2008-03-04

    申请号:US10849814

    申请日:2004-05-21

    摘要: A method is disclosed that allows the production of peptides having three or more amino acid residues easily, inexpensively and at high yield without going through a complex synthesis method. A novel enzyme that efficiently produces a peptide from bacteria belonging to the genus Empedobacter or the genus Sphingobacterium is provided. The enzyme acts on a carboxy component and an amine component to form peptides having three or more amino acid residues by acting on a carboxy component and an amine component.

    摘要翻译: 公开了一种能够容易地,低成本地以高产率制备具有三个或更多个氨基酸残基的肽而不经过复合合成方法的方法。 提供了一种新颖的酶,其有效地从属于Empedobacter属或Sphingobacterium属的细菌产生肽。 该酶作用于羧基组分和胺组分以通过作用于羧基组分和胺组分形成具有三个或更多个氨基酸残基的肽。

    Mutant protein having the peptide-synthesizing activity
    29.
    发明申请
    Mutant protein having the peptide-synthesizing activity 审中-公开
    具有肽合成活性的突变蛋白

    公开(公告)号:US20060188976A1

    公开(公告)日:2006-08-24

    申请号:US11311467

    申请日:2005-12-20

    CPC分类号: C07K14/00 C07K14/195 C12N9/93

    摘要: The present invention is to provide an excellent peptide-synthesizing protein and a method for efficiently producing a peptide. A peptide is synthesized by reacting an amine component and a carboxy component in the presence of at least one of proteins shown in the following (I) and (II): (I) The mutant protein having the amino acid sequence containing one or more mutations of the above mutations 1 to 38 in the amino acid sequence described in SEQ ID NO:2; and (II) The mutant protein having the amino acid sequence containing one or more mutations selected from the group consisting of substitution, deletion, insertion, addition and inversion at positions other than one or more mutation positions of the above mutation 1 to 38 in the mutant protein described in the above (I), and having a peptide-synthesizing activity.

    摘要翻译: 本发明提供优异的肽合成蛋白质和有效生产肽的方法。 在下列(I)和(II)所示的至少一种蛋白质的存在下,使胺组分和羧基组分反应合成肽:(I)具有含有一个或多个突变的氨基酸序列的突变蛋白 在SEQ ID NO:2中描述的氨基酸序列中的上述突变1至38; 和(II)具有在上述变异株1〜38中的一个以上突变位置以外的位置上具有选自取代,缺失,插入,添加和倒位的一个或多个突变的氨基酸序列的突变蛋白质 上述(I)所述的突变型蛋白质,具有肽合成活性。

    METHOD FOR PRODUCING ALPHA-L-ASPARTYL-L-PHENYLALANINE-BETA-ESTER AND METHOD FOR PRODUCING ALPHA-L-ASPARTYL-L-PHENYLALANINE-ALPHA-METHYL ESTER
    30.
    发明申请
    METHOD FOR PRODUCING ALPHA-L-ASPARTYL-L-PHENYLALANINE-BETA-ESTER AND METHOD FOR PRODUCING ALPHA-L-ASPARTYL-L-PHENYLALANINE-ALPHA-METHYL ESTER 有权
    生产ALPHA-L-ASPARTYL-L-PHENYLALANINE-BETA-ESTER的方法及生产ALPHA-L-ASPARTYL-L-苯乙胺 - 阿魏酸酯的方法

    公开(公告)号:US20090191600A1

    公开(公告)日:2009-07-30

    申请号:US11970203

    申请日:2008-01-07

    IPC分类号: C12P13/22

    摘要: A method for producing an α-L-aspartyl-L-phenylalanine-β-ester (also named α-L-(β-o-substituted aspartyl)-L-phenylalanine), which is an intermediate of an α-L-aspartyl-L-phenylalanine-α-methyl ester (also named α-L-aspartyl-L-phenylalanine methyl ester; product name: aspartame), easily, at high yield and inexpensively without going through a complex synthesis method is provided. Further, an easy, inexpensive and high-yield production method for an α-L-aspartyl-L-phenylalanine-α-methyl ester is provided. α-L-aspartyl-L-phenylalanine-α-methyl ester is produced from a L-aspartic acid-α,β-diester and L-phenylalanine using an enzyme or enzyme-containing substance that has an ability to catalyze a reaction in which L-phenylalanine performs no nucleophilic attack on a β-ester site of L-aspartic acid-α,β-diester but performs a nucleophilic attack on an α-ester site thereof.

    摘要翻译: 制备α-L-天冬氨酰基-L-苯丙氨酸-β-酯(也称为α-L-(β-邻位取代的天冬氨酰基)-L-苯丙氨酸)的方法,其为α-L-天冬氨酰基 提供了L-苯丙氨酸-α-甲酯(也称为α-L-天冬氨酰基-L-苯丙氨酸甲酯;商品名:阿斯巴甜),容易地以高产率和低成本地经历复合合成方法。 此外,提供了一种用于α-L-天冬氨酰基-L-苯丙氨酸-α-甲酯的容易,便宜且高产量的制备方法。 使用具有催化反应能力的酶或含酶物质由L-天冬氨酸-α,β-二酯和L-苯丙氨酸生产α-L-天冬氨酰基-L-苯丙氨酸-α-甲酯,其中 L-苯丙氨酸不对L-天冬氨酸-α,β-二酯的β-酯位点进行亲核攻击,但对其α-酯位点进行亲核攻击。