Intein-mediated protein ligation of expressed proteins
    1.
    发明授权
    Intein-mediated protein ligation of expressed proteins 失效
    表达蛋白质的蛋白质介导的蛋白质连接

    公开(公告)号:US06849428B1

    公开(公告)日:2005-02-01

    申请号:US09249543

    申请日:1999-02-12

    摘要: A method for the ligation of expressed proteins which utilizes inteins, for example the RIR1 intein from Methanobacterium thermotrophicum, is provided. Constructs of the Mth RIR1 intein in which either the C-terminal asparagine or N-terminal cysteine of the intein are replaced with alanine enable the facile isolation of a protein with a specified N-terminal, for example, cysteine for use in the fusion of two or more expressed proteins. The method involves the steps of generating a C-terminal thioester-tagged target protein and a second target protein having a specified N-terminal via inteins, such as the modified Mth RIR1 intein, and ligating these proteins. A similar method for producing a cyclic or polymerized protein is provided. Modified inteins engineered to cleave at their C-terminus or N-terminus, respectively, and DNA and plasmids encoding these modified inteins are also provided.

    摘要翻译: 提供了利用内含肽表达的蛋白质的连接方法,例如来自热嗜热杆菌的RIR1内含肽。 第三RIR1内含肽的构建体,其中内含肽的C末端天门冬酰胺或N-末端半胱氨酸被丙氨酸取代,能够容易地分离具有指定N-末端的蛋白质,例如半胱氨酸用于融合 两种或更多表达的蛋白质。 该方法包括产生C-末端硫酯标记的靶蛋白和通过内含肽(例如经修饰的第M RIR1内含肽)具有特定N-末端的第二靶蛋白并连接这些蛋白质的步骤。 提供了用于生产环状或聚合蛋白质的类似方法。 还提供了修饰的内含肽,分别设计用于在其C末端或N末端切割,以及编码这些修饰的内含肽的DNA和质粒。

    Intein mediated peptide ligation
    4.
    发明授权
    Intein mediated peptide ligation 失效
    蛋白介导的肽连接

    公开(公告)号:US07001745B1

    公开(公告)日:2006-02-21

    申请号:US09786009

    申请日:1999-09-30

    摘要: The present invention provides methods that utilize compositions containing colostrinin, an constituent peptide thereof, an active analog thereof, and combinations thereof, as an oxidative stress regulator.

    摘要翻译: 提供了一种用于产生半合成融合蛋白的体外方法,其中与内蛋白 - 蛋白质剪接元件融合的靶蛋白在图1所示的第一步中用硫醇试剂选择性地切割,形成羧基末端硫酯 的靶蛋白,并从内含肽释放靶蛋白。 在如图1所示的随后步骤中,将具有氨基末端半胱氨酸的所需的合成的蛋白质或肽连接到靶蛋白质上。 在第一步中可以使用标准硫醇试剂如DTT或为连接而优化的硫醇试剂,例如无味的MESNA。 该方法允许期望的肽直接连接已连接目标蛋白质与内含肽的硫酯键。 该方法的体内变异将允许产生细胞毒性蛋白质:在体内引入与内含肽融合的截短的,无活性的形式的蛋白质,然后选择性地切割该融合产物,随后连接合成的蛋白质或肽 在靶蛋白的羧基末端硫酯上,以恢复cxtotoxic蛋白的天然活性。

    Modified chitin-binding domain and use thereof

    公开(公告)号:US06987007B2

    公开(公告)日:2006-01-17

    申请号:US11110002

    申请日:2005-04-20

    IPC分类号: C12P21/00

    摘要: Compositions and methods are provided for reversibly binding chitin binding domain (CBD) to a chitin or equivalent substrate under non denaturing conditions. CBD is modified preferably by a mutation to achieve this change in properties. In one embodiment, an aromatic amino acid residue located in the binding cleft of the CBD was altered resulting in reversible binding affinity for substrate in select conditions. Creating a modified CBD with an altered binding affinity for substrate provides new uses for CBD not previously possible with unmodified CBD which binds irreversibly to chitin.

    MODIFIED CHITIN-BINDING DOMAIN AND USE THEREOF
    8.
    发明申请
    MODIFIED CHITIN-BINDING DOMAIN AND USE THEREOF 有权
    修改的结合域及其使用

    公开(公告)号:US20050196804A1

    公开(公告)日:2005-09-08

    申请号:US11110001

    申请日:2005-04-20

    摘要: Compositions and methods are provided for reversibly binding chitin binding domain (CBD) to a chitin or equivalent substrate under non denaturing conditions. CBD is modified preferably by a mutation to achieve this change in properties. In one embodiment, an aromatic amino acid residue located in the binding cleft of the CBD was altered resulting in reversible binding affinity for substrate in select conditions. Creating a modified CBD with an altered binding affinity for substrate provides new uses for CBD not previously possible with unmodified CBD which binds irreversibly to chitin.

    摘要翻译: 提供了组合物和方法,用于在非变性条件下将壳多糖结合域(CBD)可逆地结合到壳多糖或等效底物。 CBD优选通过突变来改变以实现这种性质的变化。 在一个实施方案中,位于CBD的结合裂缝中的芳族氨基酸残基被改变,导致在选择的条件下对底物的可逆结合亲和力。 用改良的底物结合亲和力建立经修饰的CBD,为以前不可能与未结合的CBD结合的CBD提供了新的用途,后者不可逆地与几丁质结合。

    Modified chitin binding domain and uses thereof
    9.
    发明授权
    Modified chitin binding domain and uses thereof 失效
    改性的几丁质结合结构域及其用途

    公开(公告)号:US06897285B2

    公开(公告)日:2005-05-24

    申请号:US10375913

    申请日:2003-02-26

    IPC分类号: C12N9/24 C07K14/00

    摘要: Compositions and methods are provided for reversibly binding chitin binding domain (CBD) to a chitin or equivalent substrate under non denaturing conditions. CBD is modified preferably by a mutation to achieve this change in properties. In one embodiment, an aromatic amino acid residue located in the binding cleft of the CBD was altered resulting in reversible binding affinity for substrate in select conditions. Creating a modified CBD with an altered binding affinity for substrate provides new uses for CBD not previously possible with unmodified CBD which binds irreversibly to chitin.

    摘要翻译: 提供了组合物和方法,用于在非变性条件下将壳多糖结合域(CBD)可逆地结合到壳多糖或等效底物。 CBD优选通过突变来改变以实现这种性质的变化。 在一个实施方案中,位于CBD的结合裂缝中的芳族氨基酸残基被改变,导致在选择的条件下对底物的可逆结合亲和力。 用改良的底物结合亲和力建立经修饰的CBD,为以前不可能与未结合的CBD结合的CBD提供了新的用途,后者不可逆地与几丁质结合。

    MODIFIED CHITIN BINDING DOMAIN AND USES THEREOF
    10.
    发明申请
    MODIFIED CHITIN BINDING DOMAIN AND USES THEREOF 失效
    修改后的绑定域及其使用

    公开(公告)号:US20060030008A1

    公开(公告)日:2006-02-09

    申请号:US11235009

    申请日:2005-09-26

    摘要: Compositions and methods are provided for reversibly binding chitin binding domain (CBD) to a chitin or equivalent substrate under non denaturing conditions. CBD is modified preferably by a mutation to achieve this change in properties. In one embodiment, an aromatic amino acid residue located in the binding cleft of the CBD was altered resulting in reversible binding affinity for substrate in select conditions. Creating a modified CBD with an altered binding affinity for substrate provides new uses for CBD not previously possible with unmodified CBD which binds irreversibly to chitin.

    摘要翻译: 提供了组合物和方法,用于在非变性条件下将壳多糖结合域(CBD)可逆地结合到壳多糖或等效底物。 CBD优选通过突变来改变以实现这种性质的变化。 在一个实施方案中,位于CBD的结合裂缝中的芳族氨基酸残基被改变,导致在选定条件下对底物的可逆结合亲和力。 用改良的底物结合亲和力建立经修饰的CBD,为以前不可能与未结合的CBD结合的CBD提供了新的用途,后者不可逆地与几丁质结合。