Method for preparing maltogenic alpha-amylase variants
    51.
    发明申请
    Method for preparing maltogenic alpha-amylase variants 有权
    麦芽糖α-淀粉酶变体的制备方法

    公开(公告)号:US20090203108A1

    公开(公告)日:2009-08-13

    申请号:US12413758

    申请日:2009-03-30

    IPC分类号: C12N9/28

    CPC分类号: C12N9/2417 A21D2/26 A21D8/042

    摘要: The inventors have modified the amino acid sequence of a maltogenic alpha-amylase to obtain variants with improved properties, based on the three-dimensional structure of the maltogenic alpha-amylase Novamyl. The variants have altered physicochemical properties., e.g. an altered pH optimum, improved thermostability, increased specific activity, an altered cleavage pattern or an increased ability to reduce retrogradation of starch or staling of bread.

    摘要翻译: 基于麦芽糖α-淀粉酶Novamyl的三维结构,本发明人已经修饰了产麦芽糖α-淀粉酶的氨基酸序列以获得具有改进性质的变体。 这些变体具有改变的物理化学性质。 改变的pH最佳,改善的热稳定性,增加的比活性,改变的切割模式或增加降低淀粉退化或面包陈化的能力。

    Alpha-Amylase Variants
    60.
    发明申请
    Alpha-Amylase Variants 有权
    α-淀粉酶变体

    公开(公告)号:US20120252095A1

    公开(公告)日:2012-10-04

    申请号:US13478512

    申请日:2012-05-23

    IPC分类号: C12N9/28

    摘要: The invention relates to a variant of a parent Termamyl-like alpha-amylase, comprising mutations in two, three, four, five or six regions/positions. The variants have increased stability at high temperatures (relative to the parent). The invention also relates to a DNA construct comprising a DNA sequence encoding an alpha-amylase variant of the invention, a recombinant expression vector which carries a DNA construct of the invention, a cell which is transformed with a DNA construct of the invention, the use of an alpha-amylase variant of the invention for washing and/or dishwashing, textile desizing, starch liquefaction, a detergent additive comprising an alpha-amylase variant of the invention, a manual or automatic dishwashing detergent composition comprising an alpha-amylase variant of the invention, a method for generating a variant of a parent Termamyl-like alpha-amylase, which variant exhibits increased.

    摘要翻译: 本发明涉及亲本的类戊酰样α-淀粉酶的变体,其包含2,3,4,5或6个/位置的突变。 这些变体在高温下(相对于亲本)具有增加的稳定性。 本发明还涉及包含编码本发明的α-淀粉酶变体的DNA序列的DNA构建体,携带本发明的DNA构建体的重组表达载体,用本发明的DNA构建体转化的细胞,使用 本发明的α-淀粉酶变体用于洗涤和/或餐具洗涤,纺织品退浆,淀粉液化,包含本发明的α-淀粉酶变体的洗涤剂添加剂,手动或自动洗碗洗涤剂组合物,其包含α-淀粉酶变体 本发明提供一种产生母体类戊酰样α-淀粉酶的变体的方法,该变体表现出增加。