ALPHA-AMYLASE-VARIANTEN MIT ERHÖHTER LÖSUNGSMITTELSTABILITÄT, VERFAHREN ZU DEREN HERSTELLUNG SOWIE WASCH- UND REINIGUNGSMITTEL MIT DIESEN ALPHA-AMYLASE-VARIANTEN
    2.
    发明公开
    ALPHA-AMYLASE-VARIANTEN MIT ERHÖHTER LÖSUNGSMITTELSTABILITÄT, VERFAHREN ZU DEREN HERSTELLUNG SOWIE WASCH- UND REINIGUNGSMITTEL MIT DIESEN ALPHA-AMYLASE-VARIANTEN 有权
    α-淀粉酶变具有增加的溶剂稳定性,生产和洗涤方法与这些α淀粉酶的变体清洁

    公开(公告)号:EP1794293A2

    公开(公告)日:2007-06-13

    申请号:EP05796115.3

    申请日:2005-09-22

    IPC分类号: C12N9/28 C11D3/386

    CPC分类号: C11D3/38681 C12N9/2417

    摘要: The invention relates to α-amylase variants that are stabilized by the point mutagenesis of asparagine (N-) radicals or glutamine (Q-) radicals, these radicals being located on the surface of the molecule, to form other amino acids with regard to a hydrolysis performed via the solvent, in particular, at elevated temperatures or high pH values. The invention also relates to methods for increasing the stability of an α-amylase with regard to a hydrolysis performed via the solvent, in particular, at elevated temperatures or high pH values, whereby at least one asparagine (N-) radical or glutamine (Q-) radical located on the surface of the molecule is exchanged to form another amino acid radical. The α-amylase variants obtained in this manner exhibit a better stability with regard to influences by solvents, an increased processivity and are suited for numerous technical areas of application, particularly for use as active ingredients in detergents and cleansers.

    GEGEN DI- UND/ODER MULTIMERISIERUNG STABILISIERTE ALPHA-AMYLASE-VARIANTEN, VERFAHREN ZU DEREN HERSTELLUNG SOWIE WASCH- UND REINIGUNGSMITTEL MIT DIESEN ALPHA-AMYLASE-VARIANTEN
    5.
    发明公开
    GEGEN DI- UND/ODER MULTIMERISIERUNG STABILISIERTE ALPHA-AMYLASE-VARIANTEN, VERFAHREN ZU DEREN HERSTELLUNG SOWIE WASCH- UND REINIGUNGSMITTEL MIT DIESEN ALPHA-AMYLASE-VARIANTEN 有权
    反对二和/或多聚稳定化的α-淀粉酶变,生产和洗涤方法与这些α淀粉酶的变体清洁

    公开(公告)号:EP1794292A2

    公开(公告)日:2007-06-13

    申请号:EP05788794.5

    申请日:2005-09-22

    IPC分类号: C12N9/28 C11D3/386

    CPC分类号: C12N9/2417 C11D3/38681

    摘要: The invention relates to α-amylase variants, which are stabilized with regard to dimerization and/or multimerization by the point mutagenesis of positively polarized or charged or neutral surface amino acids into negatively polarized or charged amino acids. The invention also relates to methods for increasing the stability of an α-amylase with regard to a dimerization and/or multimerization induced by electrostatic interactions, whereby at least one amino acid radical of the starting molecule, which is located on the surface of the molecule and which exerts a neutral or positively polar or charged contribution to the electrostatic potential of the molecule, is replaced by a stronger negatively polar or negatively charged amino acid radical. The α-amylase variants obtained in this manner exhibit an improved processivity and are suited for numerous technical areas of application, particularly for use as active ingredients in detergents and cleansers.