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    • 9. 发明授权
    • Phage display for detergent enzyme activity
    • 噬菌体展示洗涤剂酶活性
    • US06194183B1
    • 2001-02-27
    • US09017612
    • 1998-02-02
    • Peter MarkvardsenMads Eskelund BjornvadFrank MikkelsenBorge Diderichsen
    • Peter MarkvardsenMads Eskelund BjornvadFrank MikkelsenBorge Diderichsen
    • C12N999
    • C40B40/02C12N9/00C12N15/1037G01N33/573
    • The invention relates to a method of identifying enzymes suitable for use in detergents, especially the selection of specific enzyme variants among a large number of such variants created through random mutagenesis. The method comprises that enzyme variants to be selected are in a mixture of enzyme variants which are each displayed on the surface of cells or phage particles, and (i) introducing the mixture into a detergent composition under conditions that will have a negative impact on the activity of or inactivate most of said enzyme variants, (ii) reacting said mixture with a catcher molecule that will bind specifically only to enzyme variants that exhibit the property sought for, (iii) separating said complex from the remaining parts of said mixture, (iv) dissociate said complex to isolate such cell(s) or phage(s) that displayed said enzyme variant without the catcher molecule, (v) introducing said phage into a host wherein it will multiply, or (va)cultivating said cell under conditions conducive to its multiplication, (vi) isolating a DNA molecule coding for said enzyme variant from the genome of said cell or phage, and (vii) determining the sequence of said DNA molecule. The invention further relates to specific materials used in said method, the enzymes selected by use of the method, and to detergent compositions comprising aid enzymes.
    • 本发明涉及一种鉴定适用于洗涤剂的酶的方法,特别是通过随机诱变产生的大量这样的变体中特异性酶变体的选择。 所述方法包括要选择的酶变体是酶变体的混合物,其各自显示在细胞或噬菌体颗粒的表面上,和(i)在将对所述洗涤剂组合物产生负面影响的条件下将所述混合物引入到洗涤剂组合物中 (ii)使所述混合物与捕获剂分子反应,捕获剂分子将仅特异性结合于显示所要求的性质的酶变体,(iii)将所述复合物与所述混合物的其余部分分离( iv)解离所述复合物以分离显示所述酶变体而没有捕获分子的这样的细胞或噬菌体,(v)将所述噬菌体引入其中将繁殖的宿主或(va)在条件下培养所述细胞 有利于其增殖,(vi)从所述细胞或噬菌体的基因组分离编码所述酶变体的DNA分子,和(vii)确定所述DNA分子的序列。 本发明还涉及所述方法中使用的具体材料,通过使用该方法选择的酶以及包含助剂酶的洗涤剂组合物。