Debranching enzymes and DNA sequences coding them, suitable for changing
the degree of branching of amylopectin starch in plants
    81.
    发明授权
    Debranching enzymes and DNA sequences coding them, suitable for changing the degree of branching of amylopectin starch in plants 失效
    提取酶和编码它们的DNA序列,适合于改变植物中支链淀粉的支化度

    公开(公告)号:US6001628A

    公开(公告)日:1999-12-14

    申请号:US596257

    申请日:1996-04-18

    CPC分类号: C12N15/8245 C12N9/2451

    摘要: DNA sequences are described which on the codogenic strand code plant debranching enzymes, whose transcripts formed in transgenic plants code new proteins with the enzymatic activity of debranching enzymes which in transgenic plants reduce the degree of branching of amylopectin starch and DNA sequences which on the codogenic strand code plant debranching enzymes, whose transcripts formed in transgenic plants prevent the synthesis of proteins with the enzymatic activity of debranching enzymes, which in the transgenic plants increases the degree of branching of amylopectin starch, as well as plasmids on which these DNA sequences are localized, which can be introduced into plant cells and plants. Also described is a process for the production of plants changed by genetic engineering whose amylopectin starch is modified, and the modified starch obtainable from these plants.

    摘要翻译: PCT No.PCT / EP94 / 02623 Sec。 371日期:1996年4月18日 102(e)1996年4月18日PCT PCT 1994年8月8日PCT公布。 出版物WO95 / 04826 日期1995年2月16日描述了在编码植物脱支酶的编码基因编码植物脱支酶上的DNA序列,其在转基因植物中形成的转录物用转基因植物的酶活性代​​谢新的蛋白质,其在转基因植物中降低支链淀粉和DNA序列的支化度 其在代码链编码植物脱支酶上,其在转基因植物中形成的转录物阻止蛋白质的合成,其具有脱支酶的酶活性,其在转基因植物中增加了支链淀粉淀粉的支化度,以及这些质粒 DNA序列是局部化的,其可以被引入植物细胞和植物中。 还描述了由支链淀粉改性的遗传工程改变的植物的生产方法,以及可从这些植物获得的改性淀粉。

    Isolation of SU1, a starch debranching enzyme, the product of the maize
gene sugary1
    83.
    发明授权
    Isolation of SU1, a starch debranching enzyme, the product of the maize gene sugary1 失效
    分离SU1,淀粉脱支酶,玉米基因的产物含糖1

    公开(公告)号:US5912413A

    公开(公告)日:1999-06-15

    申请号:US410784

    申请日:1995-03-24

    摘要: SU1, a starch debranching enzyme active in maize endosperm (Zea mays), and the cDNA and gene sequences encoding SU1 are disclosed. The amino acid sequence is significantly similar to that of bacterial isoamylases, enzymes that hydrolyze .alpha.-(1.fwdarw.6) glycosidic bonds. Amino acid sequence similarity establishes SU1 as a member of the .alpha.-amylase superfamily of starch hydrolytic enzymes. Also disclosed are antibodies reactive with the SU1 protein, methods of producing antibodies to the SU1 protein, methods of producing fusion proteins including SU1 and methods of producing transgenic plants with a modified su1 gene. The expressed SU1 protein can serve as a replacement for the bacterial and fungal enzymes currently used in the starch processing industry.

    摘要翻译: SU1是在玉米胚乳(Zea mays)中活性的淀粉脱支酶,并且公开了编码SU1的cDNA和基因序列。 氨基酸序列与细菌异戊酰酶(水解α-(1-> 6)糖苷键的酶显着相似。 氨基酸序列相似性建立了SU1作为淀粉水解酶的α-淀粉酶超家族的成员。 还公开了与SU1蛋白反应的抗体,产生SU1蛋白的抗体的方法,产生包括SU1的融合蛋白的方法和用修饰的su1基因产生转基因植物的方法。 表达的SU1蛋白可以用作淀粉加工业中目前使用的细菌和真菌酶的替代物。

    Method for recovery and purification of isoamylase by adsorption on raw
starch
    85.
    发明授权
    Method for recovery and purification of isoamylase by adsorption on raw starch 失效
    通过在生淀粉上吸附回收和纯化异淀粉酶的方法

    公开(公告)号:US5811277A

    公开(公告)日:1998-09-22

    申请号:US391769

    申请日:1995-02-21

    IPC分类号: C12N9/44 C12N9/24

    CPC分类号: C12N9/246 C12Y302/01068

    摘要: The present invention relates to a method for recovery and purification of isoamylase by raw starch adsorption method. Various raw starches are used to recover the isoamylase produced by a bacterium such as Pseudomonas amyloderamosa. The method comprises using raw starch to adsorb isoamylase under conditions suitable for such adsorption and isolating the adsorbed enzyme. The isoamylase adsorption rate varied with the species of raw starch. Additionally, raw starch can be recycled.

    摘要翻译: 本发明涉及通过生淀粉吸附法回收和纯化异淀粉酶的方法。 使用各种原料淀粉来回收由细菌如淀粉假单胞菌(Pseudomonas amyloderamosa)产生的异淀粉酶。 该方法包括使用生淀粉在适于吸附和分离吸附的酶的条件下吸附异淀粉酶。 异淀粉酶的吸附速率随生淀粉的种类而变化。 另外,可以回收生淀粉。

    Crystalline chondroitinase isolated from Proteus vulgaris ATCC 6896
    86.
    发明授权
    Crystalline chondroitinase isolated from Proteus vulgaris ATCC 6896 失效
    从普通变形杆菌ATCC 6896分离的结晶软骨素酶

    公开(公告)号:US5773277A

    公开(公告)日:1998-06-30

    申请号:US445206

    申请日:1995-05-18

    IPC分类号: C12N9/88 C12N9/44

    CPC分类号: C12N9/88

    摘要: A crystallizable, purified chondroitinase ABC having a molecular weight of about 100,000 dalton by the measurement of the SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and the measurement by the gel permeation chromatography method, having alanine as the N-terminal amino acid and proline as the C-terminal amino acid is disclosed. A process for the purification of the crystallizable purified chondroitinase ABC comprising removing nucleic acid from an surfactant solution extract obtained from cells of chondroitinase ABC-producing microorganisms and chromatographically treating by concentration gradient elution using a weak cation exchange resin or a strong cation exchange resin is disclosed. A composition comprising a chondroitinase and serum albumin, gelatin, or a nonionic surfactant is disclosed. The enzyme is isolated from Proteus vulgaris ATCC 6896.

    摘要翻译: 通过SDS-聚丙烯酰胺凝胶电泳(SDS-PAGE)的测量和通过凝胶渗透色谱法测定的具有约100,000道尔顿分子量的可结晶纯化的软骨素酶ABC,其具有丙氨酸作为N-末端氨基酸和脯氨酸 因为公开了C-末端氨基酸。 公开了一种纯化可结晶纯化软骨素酶ABC的方法,包括从由软骨素酶ABC产生的微生物的细胞获得的表面活性剂溶液提取物中除去核酸,并使用弱阳离子交换树脂或强阳离子交换树脂进行色谱法处理。 。 公开了包含软骨素酶和血清白蛋白,明胶或非离子表面活性剂的组合物。 该酶从普通变形杆菌ATCC 6896中分离。

    Alkaline pullulanase Y having .alpha.-amylase activity
    89.
    发明授权
    Alkaline pullulanase Y having .alpha.-amylase activity 失效
    ALKALINE PULLULANASE Y HAVING(ALPHA) - 酰胺酶活性

    公开(公告)号:US5147796A

    公开(公告)日:1992-09-15

    申请号:US825314

    申请日:1992-01-27

    IPC分类号: C12N9/44

    摘要: An isolated alkaline pullulanase Y having .alpha.-amylase activity; a microorganism producing the alkaline pullulanase Y; and a process for producing the alkaline pullulanase Y are disclosed. The alkaline pullulanase Y having .alpha.-amylase activity has its optimum pH at higher alkaline range than conventional alkaline pullulanases and exhibits excellent stability in a wide pH range. Further, the alkaline pullulanase Y has strong resistance to almost all detergent components such as surfactants, chelating agents, proteases for detergents, and the like. Thus the alkaline pullulanase Y can advantageously be used as a detergent component.

    摘要翻译: 具有α-淀粉酶活性的分离的碱性支链淀粉酶Y; 产生碱性支链淀粉酶Y的微生物; 并公开了制备碱性支链淀粉酶Y的方法。 具有α-淀粉酶活性的碱性支链淀粉酶Y具有比常规碱性支链淀粉酶更高的碱性范围的最佳pH,并且在宽pH范围内表现出优异的稳定性。 此外,碱性支链淀粉酶Y对几乎所有的洗涤剂组分如表面活性剂,螯合剂,用于洗涤剂的蛋白酶等都具有很强的抗性。 因此,碱性支链淀粉酶Y可以有利地用作洗涤剂组分。

    Alkaline pullulanase from Bacillus sp. FERM P-10887
    90.
    发明授权
    Alkaline pullulanase from Bacillus sp. FERM P-10887 失效
    来自BACILLUS SP的ALKALINE PULLULANASE FERM P-10887

    公开(公告)号:US5147795A

    公开(公告)日:1992-09-15

    申请号:US575434

    申请日:1990-08-30

    IPC分类号: C12N9/44

    摘要: A novel alkaline pullulanase; a microorganism producing the alkaline pullulanase; and a process for producing the alkaline pullulanase are disclosed. The alkaline pullulanase of the present invention has a higher optimum pH range (pH 9.5-11) than conventional alkaline pullulanases and shows excellent stability in a wider pH range. It has also an optimum temperature of higher than 50.degree. C. and is thermally stable up to 40.degree. C. The alkaline pullulanase has also strong reistance to almost all detergent components such as surfactants, chelating agents, proteases for detergents, and the like. The alkaline pullulanase can advantageously be used as a detergent component. Also, it can be utilized for producing many kinds of oligosaccharides and also together with .alpha.-amylase for producing various monosaccharides.