Variants of glycoside hydrolases
    4.
    发明授权
    Variants of glycoside hydrolases 有权
    糖苷水解酶的变体

    公开(公告)号:US08383385B2

    公开(公告)日:2013-02-26

    申请号:US13009524

    申请日:2011-01-19

    摘要: The present invention relates to variants of a parent glycoside hydrolase, comprising a substitution at one or more positions corresponding to positions 21, 94, 157, 205, 206, 247, 337, 350, 373, 383, 438, 455, 467, and 486 of amino acids 1 to 513 of SEQ ID NO: 2, and optionally further comprising a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2 a substitution at one or more positions corresponding to positions 8, 22, 41, 49, 57, 113, 193, 196, 226, 227, 246, 251, 255, 259, 301, 356, 371, 411, and 462 of amino acids 1 to 513 of SEQ ID NO: 2, wherein the variants have glycoside hydrolase activity. The present invention also relates to nucleotide sequences encoding the variant glycoside hydrolases and to nucleic acid constructs, vectors, and host cells comprising the nucleotide sequences.

    摘要翻译: 本发明涉及母体糖苷水解酶的变体,其包含在对应于位置21,94,157,205,206,247,337,350,373,383,438,455,467的一个或多个位置的取代,和 486,SEQ ID NO:2的氨基酸1至513,并且任选地还包含在对应于位置8,22,41,49,57,113,193,196,226,227,246,29的一个或多个位置的取代, SEQ ID NO:2的氨基酸1至513的251,255,259,301,356,371,411和462在对应于位置8,22,41,49,57,113, SEQ ID NO:2的氨基酸1至513的193,196,226,227,246,251,255,259,301,356,371,411和462,其中所述变体具有糖苷水解酶活性。 本发明还涉及编码变体糖苷水解酶的核苷酸序列以及包含核苷酸序列的核酸构建体,载体和宿主细胞。

    Method for purifying cyclic inulooligosaccharide
    9.
    发明授权
    Method for purifying cyclic inulooligosaccharide 失效
    环状寡毛细胞的纯化方法

    公开(公告)号:US5672482A

    公开(公告)日:1997-09-30

    申请号:US418770

    申请日:1995-04-07

    CPC分类号: C12P19/04

    摘要: An exo-enzyme having an ability to cut .beta.-(2.fwdarw.1) fructoside bond or a microorganism which produces the enzyme is allowed to act on a saccharide solution containing cyclic inulooligosaccharide in which fructose molecules are bonded through .beta.-(2.fwdarw.1) bond in a cyclic configuration, and other saccharides such as monosaccharide, disaccharide, linear oligosaccharide and inulin, and then the cyclic inulooligosaccharide is collected from an obtained saccharide solution. Thus cyclic inulooligosaccharide can be purified inexpensively at a high yield without using any solvent.

    摘要翻译: 具有切割β-(2-> 1)果糖苷键的能力的外切酶或产生该酶的微生物被允许作用于含有果糖分子通过β - (2-> 1)键合,以及其它糖类如单糖,二糖,线性寡糖和菊粉,然后从获得的糖溶液中收集环状寡岛寡糖。 因此,可以在不使用任何溶剂的情况下以高产率廉价地纯化环状寡岛寡糖。