Verfahren zur stereoselektiven enzymatischen Reduktion von Ketoverbindungen
    121.
    发明公开
    Verfahren zur stereoselektiven enzymatischen Reduktion von Ketoverbindungen 审中-公开
    Verfahren zur stereoselektiven enzymematischen Reduktion von Ketoverbindungen

    公开(公告)号:EP2226386A1

    公开(公告)日:2010-09-08

    申请号:EP09450050.1

    申请日:2009-03-05

    申请人: IEP GmbH

    IPC分类号: C12P7/02 C12P7/24 C12P41/00

    摘要: Bei einem Verfahren zur stereoselektiven, insbesondere enantioselektiven enzymatischen Reduktion von Ketoverbindungen zu den entsprechenden chiralen Hydroxyverbindungen, wobei die Ketoverbindungen mit einer Oxidoreduktase reduziert werden, wird zur Reduktion der Ketoverbindungen ein Polypeptid eingesetzt, welches zur Gruppe der "short-chain"-Oxidoreduktasen zählt und folgende Merkmale aufweist:
    (i) einen N-terminalen Rossmann-Fold GxxxGxG,
    (ii) ein NNAG-Motiv an der Position 86,
    (iii) eine katalytische Triade, bestehend aus S 139, Y 152 und K 156,
    (iv) einen negativ geladenen Aminosäurerest an Position 37 (nach dem numerischen System von 3alpha,20beta-HSD);
    (v) ein C-terminales Motiv in der Dimerisierungsdomäne [V; I]-DG-[G;A]-Y-[T; V; C]-[A; T]-[Q; V; R; L],
    (vi) eine R-ADH-Signatur an der Position 204 bis 208: H-[P; A]-[I; A; Q; V]-GR,
    (vii) Val oder Leu an der Position 160 (4 Stellen abwärts der K 156), und
    (viii) Asp an der Position 178.

    摘要翻译: 将酮化合物的立体选择性(优选对映选择性)酶还原为其相应的手性羟基化合物,包括用氧化还原酶还原酮酯化合物,其中:多肽用于还原酮化合物; 并且所述多肽包括短链氧化还原酶和特异性。 (a)N端Rossmann折叠GlyxxxGlyxGly,(b)位置86处的AsnAsnAlaGly-基序,(c)由Ser 139,Tyr 152和Lys 156组成的催化三联体,和(d)带负电荷的氨基酸残基 将酮化合物的立体选择性(优选对映选择性)酶还原为其相应的手性羟基化合物包括用氧化还原酶还原酮化合物,其中:多肽用于还原酮化合物; 该多肽包括短链氧化还原酶和(a)N-末端罗斯曼折叠GlyxxxGlyxGly的特征,(b)86位的AsnAsnAlaGly-基序,(c)由Ser 139,Tyr 152和Lys 156组成的催化三联体 ,(d)37位带负电荷的氨基酸残基(根据3α,20β-羟基类固醇脱氢酶的数值系统),(e)二聚化结构域[Val; Ile] -AspGly- [Gly ; Ala-Tyr- [Thr; Val; Cys] - [Ala; Thr] - [Gln; Val; Arg; Leu],(f)位置204-208处的(R) - 保守加氢酶签名,His- 亲;丙氨酸] - [异亮氨酸;丙氨酸;谷氨酰胺; Val] -GlyArg,(g)位置160处的Val或Leu(向下到Lys 156的4个点),和(h)178位的Asp; 并没有定义x。

    A STREPTOMYCES STRAIN AND THE METHOD OF CONVERTING FERULIC ACID TO VANILLIN BY USING THE SAME
    123.
    发明公开
    A STREPTOMYCES STRAIN AND THE METHOD OF CONVERTING FERULIC ACID TO VANILLIN BY USING THE SAME 审中-公开
    STREPTOMYCES TRIBE和方法转化为阿魏香兰素使用其

    公开(公告)号:EP2075327A1

    公开(公告)日:2009-07-01

    申请号:EP07721549.9

    申请日:2007-06-25

    CPC分类号: C12R1/465 C12P7/24

    摘要: A method of vanillin production from ferulic acid with a high concentration by biotransformation using a Streptomyces sp. strain is claimed in this invention. This strain is named as Streptomyces sp. V-1, which has been deposited in China Center for Type Culture Collection on July 12, 2006 with the number of CCTCC M 206065. Using this strain, high concentration of vanillin fermentation broth is obtained from ferulic acid by biotransformation in GY biotransformation medium. With the addition of macroporous adsorbent resin DM11, the concentration of vanillin can be greatly improved. The advantage of this invention is less environmental pollution, high product concentration, less by-product, short processing cycle, low production cost, simple product extraction, clean production process, product environmental friendly, safe and reliable, which solves many difficulties in the vanillin production from botanical raw material extraction or chemical synthesis, and therefore it has good application prospect.

    摘要翻译: 香兰素从生产阿魏酸的高浓度通过使用链霉菌属生物转化的方法。 应变是本发明要求保护的。 这株被命名为链霉菌。 V-1,已经沉积在中国中心典型培养物保藏于2006年7月12日,与CCTCC中号第二十零万六千零六十五数量使用该菌株,香兰素发酵液中的高浓度由GY转化培养基中的生物转化从阿魏酸获得。 通过添加大孔吸附树脂DM11的,香草醛的浓度可以大大提高。 本发明的优点是环境污染少,产品的高浓度,更少的副产物,加工周期短,生产成本低,简单的产品提取,清洁生产工艺,产品环保,安全可靠,这在香兰素解决了许多困难 生产从植物原料提取或化学合成的,因此它具有良好的应用前景。

    Verfahren zur enzymatischen Reduktion von Alkenderivaten
    125.
    发明公开
    Verfahren zur enzymatischen Reduktion von Alkenderivaten 审中-公开
    Verfahren zur enzymematischen Reduktion von Alkenderivaten

    公开(公告)号:EP1959019A1

    公开(公告)日:2008-08-20

    申请号:EP06126993.2

    申请日:2006-12-22

    申请人: BASF SE

    摘要: Verfahren zur enzymatischen Herstellung von Verbindungen der allgemeinen Formel (2)
    aus ungesättigten Alken-Derivaten der allgemeinen Formel (1) durch Reduktion einer Verbindung der Formel (1) in Gegenwart einer Reduktase umfassend wenigstens eine der Polypeptidsequenzen SEQ ID NO:1, 2, oder 3 oder mit einer funktional äquivalenten Polypeptidsequenz, die mindestens 80% Sequenzidentität mit SEQ ID NO:1, 2, oder 3 aufweist.

    摘要翻译: 饱和硝基,酮,醛或羧基衍生物的酶促生产涉及在多肽序列SEQ ID NO:1,2或3的还原酶存在下还原相应的不饱和烯烃衍生物。 2)由式(1)的不饱和烯烃包括在还原酶(i)的存在下还原(1)(i)包含多肽序列SEQ ID NO:1,2或3,或(ii)具有功能等同物 A:硝基,酮基(-CRO),醛(-CHO)或羧基(-COOR)基团;与SEQ ID NO:1,2或3相同的序列。 R:H或任选取代的1-6C烷基; R 1> -R 3> H,1-6C烷基,2-6C烯基,羧基或任选取代的碳 - 或杂环芳族或非芳族残基,或R 1>和R 3>(或R 1> 和R)可以连接形成4-至8-元环的一部分,条件是R 1,R 2和R 3>可以不相同。 [图片]。

    Alcohol-aldehyd-dehydrogenases
    128.
    发明公开
    Alcohol-aldehyd-dehydrogenases 失效
    酒精的醛 - 脱氢酶

    公开(公告)号:EP1688499A1

    公开(公告)日:2006-08-09

    申请号:EP06003507.8

    申请日:1997-09-11

    摘要: The present invention is directed to a recombinant enzyme preparation having an alcohol and/or aldehyde dehydrogenase activity which comprises one or more enzymatic polypeptide(s) selected from the group consisting of polypeptides which are identified by SEQ ID NO 5, SEQ ID NO 6, SEQ ID NO 7 and SEQ ID NO 8 and chimeric recombinant enzymes between the polypeptides identified by SEQ ID NO 5, SEQ ID NO 6, SEQ ID NO 7 and SEQ ID NO 8 and functional derivatives of the polypeptides identified above which contain addition, insertion, deletion and/or substitution of one or more amino acid residue(s), wherein said enzymatic polypeptides have said alcohol and/or aldehyde dehydrogenase activity, DNA molecules encoding such polypeptides, vectors comprising such DNA molecules, host cells transformed by such vectors and processes for the production of such recombinant enzyme preparations, aldehyds, ketones or carboxylic acids by using such enzyme preparations and specifically 2-keto-L-gulonic acid and more specifically L-ascorbic acid (vitamin C).

    摘要翻译: 本发明涉及具有醇和/或醛脱氢酶活性的重组酶制剂,其包含一种或多种选自下组的酶多肽:由SEQ ID NO 5,SEQ ID NO 6, SEQ ID NO 7和SEQ ID NO 8所示的多肽和在由SEQ ID NO 5,SEQ ID NO 6,SEQ ID NO 7和SEQ ID NO 8所鉴定的多肽之间的嵌合重组酶,以及上述鉴定的多肽的功能性衍生物, ,其中所述酶多肽具有所述醇和/或醛脱氢酶活性的一个或多个氨基酸残基的缺失和/或取代,编码所述多肽的DNA分子,包含此类DNA分子的载体,由所述载体转化的宿主细胞和 通过使用这样的酶制剂并特别是2-酮基-L-古洛糖酸来制备这样的重组酶制剂,醛,酮或羧酸的方法 更具体地说是L-抗坏血酸(维生素C)。

    MUSKMELON (CUCUMIS MELO) HYDROPEROXIDE LYASE AND USES THEREOF
    129.
    发明授权
    MUSKMELON (CUCUMIS MELO) HYDROPEROXIDE LYASE AND USES THEREOF 有权
    Hydroperoxidelyase甜瓜(香瓜)及其用途

    公开(公告)号:EP1268819B1

    公开(公告)日:2006-06-07

    申请号:EP01914130.8

    申请日:2001-03-27

    CPC分类号: C12N9/88

    摘要: The present invention provides a fatty acid lyase, wherein the activity of the lyase for 9-hydroperoxide substrates is greater than the activity for 13-hydroperoxide substrates and wherein Km and Vmax of the lyase for 9-hydroperoxylinolenic acid are greater than Km and Vmax of the lyase for 9-hydroperoxylinoleic acid. More particularly, the invention provides a lyase present in melon Cucumis melo . The invention also provides a nucleic acid encoding the lyase, vectors, and expression systems with which the recombinant lyase can be obtained. The invention also provides methods of using the lyase of the invention, including methods of cleaving 9-hydroperoxylinoleic acid, 9-hydroperoxylinolenic acid, 13-hydroperoxylinoleic acid, and 13-hydroperoxylinolenic acid. Also, the invention provides a method of preparing 3-(Z)-nonenal, (3Z,6Z)-nonadienal, 2-(E)-nonenal, (2E,6Z)-nonadienal, or their corresponding alcohols and a method of preparing n-hexanal, 3-(Z)-hexen-1-al, 2-(E)-hexen-1-al, or their corresponding alcohols using the lyase of the present invention.