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    • 34. 发明申请
    • Alpha-amylase mutants
    • α-淀粉酶突变体
    • US20030211958A1
    • 2003-11-13
    • US10327837
    • 2002-12-23
    • Novozymes A/S
    • Allan SvendsenTorben Vedel BorchertHenrik Bisgard-FrantzenHelle OuttrupBjarne Ronfeldt NielsenVibeke Skovgaard NielsenLisbeth Hedegaard
    • C11D003/386C07H021/04C12N009/28C12P021/02C12N001/21C12N015/74
    • C12N9/2417C11D3/386C11D3/38609C11D3/38618C12Y302/01001
    • The invention relates to a novel Termamyl-like alpha-amylase, and Termamyl-like alpha-amylases comprising mutations in two, three, four, five or six regions/positions. The variants have increased thermostability at acidic pH and/or at low Ca2null concentrations (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 thermostability at acidic pH and/or at low Ca2null concentrations (relative to the parent).
    • 本发明涉及一种新的类戊酰样α-淀粉酶和包含2,3,4,5或6个或6个位置突变的类戊酰样α-淀粉酶。 这些变体在酸性pH和/或低Ca 2+浓度(相对于亲本)中具有增加的热稳定性。 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 本发明提供了一种产生母体类戊酰样α-淀粉酶的变体的方法,该变体在酸性pH和/或低Ca 2+浓度(相对于亲本)表现出增加的热稳定性。
    • 35. 发明申请
    • Cell-wall degrading enzyme variants
    • 细胞壁降解酶变体
    • US20030175940A1
    • 2003-09-18
    • US10403192
    • 2003-03-31
    • Novozymes A/S
    • Sanne O. Schroder GladCarsten AndersenMartin SchuleinHanne DelaTorben Peter
    • C12N009/88G01N033/53G06F019/00G01N033/48G01N033/50C07H021/04C12N001/21C11D003/386C12N015/74
    • C11D3/38636C12N9/88
    • The present invention relates to variants of a cell-wall degrading enzyme having a beta-helix structure, which variant has at least one substituent in a position determined by identifying all residues potentially belonging to a stack; characterizing the stack as interior or exterior; characterizing the stack as polar, hydrophobic or aromatic/heteroaromatic based on the dominating characteristics of the parent or wild-type enzyme stack residues and/or its orientation relative to the beta-helix (interior or exterior); optimizing all stack positions of a stack either to hydrophobic aliphatic amino acids, hydrophobic aromatic or polar amino acids by allowing mutations within one or all positions to amino acids belonging to one of these groups; measuring thermostability of the variants by DSC or an application-related assay such as a Pad-Steam application test; and selecting the stabilized variants. Variant of a wild-type parent pectate lyase (EC 4.2.2.2) having the conserved amino acid residues D111, D141 or E141, D145, K165, R194 and R199 when aligned with the pectate lyase comprising the amino acid sequence of SEQ ID NO: 2 are preferred.
    • 本发明涉及具有β-螺旋结构的细胞壁降解酶的变体,该变体具有至少一个取代基,其位置通过鉴定潜在属于堆叠的所有残基而确定; 将堆栈表征为内部或外部; 基于母体或野生型酶堆残基的主导特征和/或其相对于β-螺旋(内部或外部)的取向,将所述叠层表征为极性,疏水性或芳族/杂芳族化合物; 通过在属于这些基团之一的氨基酸的一个或所有位置内允许突变将堆叠的所有堆叠位置优化为疏水性脂族氨基酸,疏水性芳族或极性氨基酸; 通过DSC测量变体的热稳定性或应用相关测定,例如Pad-Steam应用测试; 并选择稳定的变体。 当与包含SEQ ID NO:1的氨基酸序列的果胶酸裂解酶比对时,具有保守氨基酸残基D111,D141或E141,D145,K165,R194和R199的野生型亲本果胶酸裂合酶(EC 4.2.2.2) 2是优选的。
    • 39. 发明申请
    • Amylase variants
    • 淀粉酶变体
    • US20030064908A1
    • 2003-04-03
    • US10025648
    • 2001-12-19
    • Novozymes A/S
    • Henrik Bisgard-FrantzenAllan SvendsenTorben Vedel Borchert
    • C11D003/00C11D003/386C12N009/00
    • C11D3/38618C11D3/38609C11D3/38681C12N9/2417C12Y302/01001D06L1/14
    • The present invention relates to variants of a parent null-amylase, which parent null-amylase (i) has an amino acid sequence selected from the amino acid sequences shown in SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3, and SEQ ID No. 7, respectively; or (ii) displays at least 80% homology with one or more of these amino acid sequences; and/or displays immunological cross-reactivity with an antibody raised against an null-amylase having one of these amino acid sequences; and/or is encoded by a DNA sequence which hybridizes with the same probe as a DNA sequence encoding an a-amylase having one of these amino acid sequences; in which variant: (a) at least one amino acid residue of the parent null-amylase has been deleted; and/or (b) at least one amino acid residue of the parent null-amylase has been replaced by a different amino acid residue; and/or (c) at least one amino acid residue has been inserted relative to the parent null-amylase; the variant having null-amylase activity and exhibiting at least one of the following properties relative to the parent null-amylase: increased thermostability; increased stability towards oxidation; and reduced Ca2null dependency; with the proviso that the amino acid sequence of the variant is not identical to any of the amino acid sequences shown in SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3 and SEQ ID No. 7, respectively.
    • 本发明涉及母体α-淀粉酶的变体,其母体α-淀粉酶(i)具有选自SEQ ID No.1,SEQ ID No.2,SEQ ID No.2所示的氨基酸序列的氨基酸序列。 3和SEQ ID No.7; 或(ii)与这些氨基酸序列中的一个或多个显示至少80%的同源性; 和/或显示与针对具有这些氨基酸序列之一的α-淀粉酶产生的抗体的免疫交叉反应性; 和/或由与编码具有这些氨基酸序列之一的α-淀粉酶的DNA序列相同的探针杂交的DNA序列编码; 在该变体中:(a)母体α-淀粉酶的至少一个氨基酸残基已被缺失; 和/或(b)母体α-淀粉酶的至少一个氨基酸残基被不同的氨基酸残基替代; 和/或(c)相对于母体α-淀粉酶插入至少一个氨基酸残基; 该变体具有α-淀粉酶活性并且相对于母体α-淀粉酶表现出以下特性中的至少一个:增加的热稳定性; 提高氧化稳定性; 并减少Ca2 +依赖; 条件是变体的氨基酸序列分别与SEQ ID No.1,SEQ ID No.2,SEQ ID No.3和SEQ ID No.7所示的任何氨基酸序列不同。