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    • 6. 发明申请
    • LIPOLYTIC ENZYME GENES
    • 脂肪酶基因
    • WO2002066622A2
    • 2002-08-29
    • PCT/DK2002/000124
    • 2002-02-25
    • NOVOZYMES A/STSUTSUMI, NorikoVIND, JesperPATKAR, Shamkant, Anant
    • TSUTSUMI, NorikoVIND, JesperPATKAR, Shamkant, Anant
    • C12N9/00
    • C11D3/386A21D8/042C11D3/38627C12N9/20C12N15/1027
    • The inventors have isolated novel genes with a high homology to the T. lanuginosus lipase gene and are thus well suited for use in gene shuffling. Accordingly, the invention provides a method of generating genetic diversity into lipolytic enzymes by family shuffling of two or more homologous genes which encode lipolytic enzymes. The DNA shuffling technique is used to create a library of shuffled genes, and this is expressed in a suitable expression system and the expressed proteins are screened for lipolytic enzyme activity. The expressed proteins may further be screened to identify lipolytic enzymes with improved properties. The invention also provides a polynucleotide comprising a nucleotide sequence encoding a lipolytic enzyme and a lipolytic enzyme (a polypeptide with lipolytic enzyme activity).
    • 本发明人已经分离出与T.lanuginosus脂肪酶基因具有高同源性的新基因,因此非常适合用于基因改组。 因此,本发明提供了一种通过编码脂肪分解酶的两个或更多个同源基因的家族洗牌来产生脂肪分解酶的遗传多样性的方法。 DNA混洗技术用于创建洗牌基因文库,并在合适的表达系统中表达,并筛选表达的蛋白质以进行脂肪分解酶活性。 进一步筛选表达的蛋白质以鉴定具有改进性质的脂肪分解酶。 本发明还提供了包含编码脂肪分解酶和脂肪分解酶(具有脂肪分解酶活性的多肽)的核苷酸序列的多核苷酸。