CONSTRUCTION OF NEW VARIANTS OF DEXTRANSUCRASE DSR-S BY GENETIC ENGINEERING
    1.
    发明申请
    CONSTRUCTION OF NEW VARIANTS OF DEXTRANSUCRASE DSR-S BY GENETIC ENGINEERING 审中-公开
    通过遗传工程构建新型番茄红素DSR-S的新品种

    公开(公告)号:US20120289689A1

    公开(公告)日:2012-11-15

    申请号:US13564776

    申请日:2012-08-02

    摘要: The present invention relates to a recombinant process for the production of truncated or mutated dextransucrases while conserving the enzymatic activity or their specificity in the synthesis of the α-1,6 bonds. The present invention relates to nucleic acid sequences of truncated or mutated dextransucrases, vectors containing the nucleic acid sequences and host cells transformed by sequences encoding truncated or mutated dextransucrases. In another aspect, the invention concerns a method for producing, in a recombinant manner, truncated or mutated dextransucrases which conserve their enzymatic activity or which conserve their specificity in the synthesis of α-1,6 bonds and can produce, from saccharose, dextrans with high molar mass and modified rheological properties compared with the properties of dextran obtained with the native enzyme and isomalto-oligosaccharides with a controlled molar mass and dextrans. The dextrans and isomalto-oligosaccharides of the invention can be used namely as texturing agents or as prebiotics.

    摘要翻译: 本发明涉及一种在保护酶活性或其合成α-1,6键的特异性的同时生产截短或突变的葡聚糖蔗糖酶的重组方法。 本发明涉及截短或突变的葡聚糖蔗糖酶的核酸序列,含有核酸序列的载体和由编码截短或突变的葡聚糖蔗糖酶的序列转化的宿主细胞。 另一方面,本发明涉及一种以重组方式生产截短或突变的葡聚糖蔗糖酯的方法,其保留其酶活性或在合成α-1,6键时保护其特异性,并可从蔗糖,葡萄糖, 与用天然酶和具有受控摩尔质量的异麦芽低聚糖和葡聚糖获得的葡聚糖的性质相比,具有高的摩尔质量和改进的流变学性质。 本发明的葡聚糖和异麦芽低聚糖可以用作变形剂或益生元。

    Production of Polyunsaturated Fatty Acids, Novel Biosynthesis Genes, And Novel Plant Expression Constructs
    4.
    发明申请
    Production of Polyunsaturated Fatty Acids, Novel Biosynthesis Genes, And Novel Plant Expression Constructs 有权
    多不饱和脂肪酸的生产,新型生物合成基因和新型植物表达构建体

    公开(公告)号:US20120210465A1

    公开(公告)日:2012-08-16

    申请号:US13342142

    申请日:2012-01-02

    摘要: The present invention relates to a method for the production of unsaturated fatty acids with at least two double bonds. The invention furthermore relates to the use of nucleic acid sequences SEQ ID NO: 1, 3, 5, 9, and 11 encoding polypeptides having desaturase or elongase activity in the method and for generating a transgenic organism, preferably a transgenic plant or a transgenic microorganism, with an increased content of fatty acids, oils or lipids with unsaturated C18-, C20-, or C22-fatty acids, and to their homologs or derivatives, to gene constructs encompassing these genes, and to their use alone or in combination with biosynthesis genes of polyunsaturated fatty acids. The invention also relates to multiexpression cassettes for seed-specific expression, and to vectors or organisms which encompass a desaturase gene alone or in combination with further desaturases and/or elongase genes or homologs using said expression cassettes.

    摘要翻译: 本发明涉及生产具有至少两个双键的不饱和脂肪酸的方法。 本发明还涉及在该方法中编码具有去饱和酶或延长酶活性的多肽的核酸序列SEQ ID NO:1,3,5,9和11的用途,并用于产生转基因生物,优选转基因植物或转基因微生物 ,具有不饱和C18-,C20-或C22-脂肪酸的脂肪酸,油脂或脂质以及它们的同系物或衍生物,包括这些基因的基因构建物的含量增加,以及它们单独使用或与生物合成相结合 多不饱和脂肪酸的基因。 本发明还涉及用于种子特异性表达的多表达盒以及包含去饱和酶基因单独或与进一步去饱和酶和/或延伸酶基因或使用所述表达盒的同源物组合的载体或生物体。

    METHODS FOR CONTROL OF FLUX IN METABOLIC PATHWAYS
    9.
    发明申请
    METHODS FOR CONTROL OF FLUX IN METABOLIC PATHWAYS 有权
    代谢途径中流量控制的方法

    公开(公告)号:US20110269198A1

    公开(公告)日:2011-11-03

    申请号:US13132721

    申请日:2009-12-14

    摘要: The invention pertains to a method for preparing cells that can be used as biocatalysts by inducing in them a growth-decoupled state, in which interferase inhibits the expression of genes except the ones that code for the pathway enzymes of interest. mRNAs that code for interferase-resistant products are overexpressed in the background of a metabolically-frozen cell. Enzymes that compete for a substrate or product of the pathway of interest may be altered such that the enzyme is sensitive to a site-specific protease, which protease is inducible in the host cell.

    摘要翻译: 本发明涉及一种制备可用作生物催化剂的细胞的方法,通过在其中诱导生长解耦状态,其中干扰酶抑制基因的表达,除了编码感兴趣的途径酶的基因之外。 编码干扰素抗性产物的mRNA在代谢冷冻细胞的背景中过表达。 可以改变竞争感兴趣途径的底物或产物的酶,使得酶对位点特异性蛋白酶敏感,该蛋白酶可在宿主细胞中诱导。