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    • 2. 发明申请
    • IMPROVED 2-DEOXY-D-RIBOSE 5-PHOSPHATE ALDOLASES FOR, AND USE IN PRODUCTION OF 2, 4, 6-TRIDEOXYHESOSES AND 6-HALO- OR 6-CYANO-SUBSTITUTED DERIVATIVES THEREOF
    • 改进的2-脱氧-D-呋喃五磷酸酯,用于生产2,4,6-三磷酸和其中6-取代或6-取代的衍生物。
    • WO2005118794A2
    • 2005-12-15
    • PCT/EP2005/005989
    • 2005-06-02
    • DSM IP ASSETS B.V.JENNEWEIN, Stefan, MartinSCHUERMANN, MartinMOMMERS, Johannes, Helena, MichaelMINK, DanielWOLBERG, MichaelWUBBOLTS, Marcel, Gerhardus
    • JENNEWEIN, Stefan, MartinSCHUERMANN, MartinMOMMERS, Johannes, Helena, MichaelMINK, DanielWOLBERG, MichaelWUBBOLTS, Marcel, Gerhardus
    • C12N9/00
    • C12N9/88C12P19/02
    • The invention relates to isolated mutants of enzymes from the group of 2-deoxy-D-ribose 5-phosphate aldolase wild-type enzymes having a productivity factor (as determined by a specific test) which is at least 10% higher than the productivity factor for the corresponding wild-type enzyme from which it is a mutant. The mutants have at least one amino acid substitution at one or more of the positions corresponding to K13, T19, Y49, N80, D84, A93, E127, A128, K146, K160,1166, A174, M185, K196, F200, and S239 in Escherichia coli K12 (EC 4.1.2.4) wild-type enzyme sequence, and/or a deletion of at least one amino acid at the positions corresponding to S258 and Y259 therein, optionally combined with, specific, C-terminal extension and/or N terminal extension. The invention also relates to screening processes to find 2-deoxy-D-ribose 5-phosphate aldolase enzymes (either as such or as mutants) having a productivity factor (as determined by said specific test, which forms an essential part of the screening) which is at least 10% higher than the reference value. Moreover, the invention relates to mutant enzymes obtained by the screening process, and to nucleic acids encoding such mutants, and to vectors and host cells comprising, respectively, such nucleic acids or mutants. Finally the invention relates to the use of such (preferably mutant) enzymes, nucleic acids, vectors and host cells in the production of, for instance, 6-chloro-2,4,6-trideoxy­D-erythrohexapyranoside.
    • 本发明涉及分离的2-脱氧-D-核糖5-磷酸醛缩酶野生型酶的突变体,其具有比生产率高至少高10%的生产率因子(通过特异性测试确定) 对于其为突变体的相应野生型酶。 突变体在对应于K13,T19,Y49,N80,D84,A93,E127,A128,K146,K160,1166,A174,M185,K196,F200和S239的一个或多个位置具有至少一个氨基酸取代 在大肠杆菌K12(EC 4.1.2.4)野生型酶序列中,和/或在其对应于S258和Y259的位置上的至少一个氨基酸的缺失,任选地与特异性C末端延伸和/或 N终端扩展。 本发明还涉及筛选方法以找到具有生产率因子的2-脱氧-D-核糖-5-磷酸醛缩酶(或者作为突变体)(通过所述具体试验确定,其形成筛选的重要部分) 其比参考值高至少10%。 此外,本发明涉及通过筛选方法获得的突变酶,以及编码这种突变体的核酸,以及分别含有这些核酸或突变体的载体和宿主细胞。 最后,本发明涉及这种(优选突变的)酶,核酸,载体和宿主细胞在生产例如6-氯-2,4,6-三脱氧-D-赤藓糖苷中的用途。
    • 4. 发明申请
    • IMPROVED 2-DEOXY-D-RIBOSE 5-PHOSPHATE ALDOLASES (DERAS) AND THE USES THEREOF
    • 改进的2-脱氧-D-呋喃五磷酸酯(DERAS)及其用途
    • WO2005118794A3
    • 2006-02-16
    • PCT/EP2005005989
    • 2005-06-02
    • DSM IP ASSETS BVJENNEWEIN STEFAN MARTINSCHUERMANN MARTINMOMMERS JOHANNES HELENA MICHAEMINK DANIELWOLBERG MICHAELWUBBOLTS MARCEL GERHARDUS
    • JENNEWEIN STEFAN MARTINSCHUERMANN MARTINMOMMERS JOHANNES HELENA MICHAEMINK DANIELWOLBERG MICHAELWUBBOLTS MARCEL GERHARDUS
    • C12N15/60C12N9/88C12P19/02
    • C12N9/88C12P19/02
    • The invention relates to isolated mutants of enzymes from the group of 2-deoxy-D-ribose 5-phosphate aldolase wild-type enzymes having a productivity factor (as determined by a specific test) which is at least 10% higher than the productivity factor for the corresponding wild-type enzyme from which it is a mutant. The mutants have at least one amino acid substitution at one or more of the positions corresponding to K13, T19, Y49, N80, D84, A93, E127, A128, K146, K160,1166, A174, M185, K196, F200, and S239 in Escherichia coli K12 (EC 4.1.2.4) wild-type enzyme sequence, and/or a deletion of at least one amino acid at the positions corresponding to S258 and Y259 therein, optionally combined with, specific, C-terminal extension and/or N terminal extension. The invention also relates to screening processes to find 2-deoxy-D-ribose 5-phosphate aldolase enzymes (either as such or as mutants) having a productivity factor (as determined by said specific test, which forms an essential part of the screening) which is at least 10% higher than the reference value. Moreover, the invention relates to mutant enzymes obtained by the screening process, and to nucleic acids encoding such mutants, and to vectors and host cells comprising, respectively, such nucleic acids or mutants. Finally the invention relates to the use of such (preferably mutant) enzymes, nucleic acids, vectors and host cells in the production of, for instance, 6-chloro-2,4,6-trideoxy­D-erythrohexapyranoside.
    • 本发明涉及分离的2-脱氧-D-核糖5-磷酸醛缩酶野生型酶的突变体,其具有比生产率高至少高10%的生产率因子(通过特异性测试确定) 对于其为突变体的相应野生型酶。 突变体在对应于K13,T19,Y49,N80,D84,A93,E127,A128,K146,K160,1166,A174,M185,K196,F200和S239的一个或多个位置具有至少一个氨基酸取代 在大肠杆菌K12(EC 4.1.2.4)野生型酶序列中,和/或在其对应于S258和Y259的位置上的至少一个氨基酸的缺失,任选地与特异性C末端延伸和/或 N终端扩展。 本发明还涉及筛选方法以找到具有生产率因子的2-脱氧-D-核糖-5-磷酸醛缩酶(或者作为突变体)(通过所述具体试验确定,其形成筛选的重要部分) 其比参考值高至少10%。 此外,本发明涉及通过筛选方法获得的突变酶,以及编码这种突变体的核酸,以及分别含有这些核酸或突变体的载体和宿主细胞。 最后,本发明涉及这种(优选突变的)酶,核酸,载体和宿主细胞在生产例如6-氯-2,4,6-三脱氧-D-赤藓糖苷中的用途。