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    • 92. 发明授权
    • Lipolytic enzyme genes
    • 脂解酶基因
    • US07271139B2
    • 2007-09-18
    • US11474151
    • 2006-06-23
    • Noriko TsutsumiJesper VindShamkant Anant Patkar
    • Noriko TsutsumiJesper VindShamkant Anant Patkar
    • A21D2/00C12N9/20
    • C11D3/386A21D8/042C11D3/38627C12N9/20C12N15/1027
    • The inventors have isolated novel lipolytic enzyme genes with a high homology to the T. lanuginosus lipase gene and 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 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丝状芽孢杆菌脂肪酶基因具有高同源性的新型脂肪分解酶基因,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。 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。
    • 97. 发明授权
    • Methods for generating recombined polynucleotides
    • 产生重组多核苷酸的方法
    • US6159687A
    • 2000-12-12
    • US040697
    • 1998-03-18
    • Jesper Vind
    • Jesper Vind
    • C12N15/10C12Q1/68
    • C12N15/1093C12N15/1027
    • A method for in vitro construction of a library of recombined homologous polynucleotides from a number of different starting DNA templates and primers by induced template shifts during an polynucleotide synthesis is described, wherebyA. extended primers are synthesized bya) denaturing the DNA templatesb) annealing primers to the templates,c) extending the said primers by use of a polymerase,d) stop the synthesis, ande) separate the extended primers from the templates,B. a template shift is induced bya) isolating the extended primers from the templates and repeating steps A.b) to A.e) using the extended primers as both primers and templates, orb) repeating steps A.b) to A.e),C. this process is terminated after an appropriate number of cycles of process steps A. and B.a), A. and B.b), or combinations thereof.Optionally the polynucleotides are amplified in a standard PCR reaction with specific primers to selectively amplify homologous polynucleotides of interest.
    • 描述了在多核苷酸合成期间通过诱导的模板位移从许多不同的起始DNA模板和引物体外构建重组的同源多核苷酸文库的方法,其中A.通过a)使DNA模板变性来合成扩展的引物b) 将引物退火至模板,c)通过使用聚合酶扩增所述引物,d)停止合成,和e)将延伸的引物与模板分离。B.通过以下步骤诱导模板位移:a) 模板和重复步骤Ab)至Ae),使用扩展引物作为引物和模板,或b)重复步骤Ab)至Ae),C.该过程在经过适当数量的工艺步骤A和B的循环之后终止 ),A.和Bb)或其组合。 任选地,在与特异性引物的标准PCR反应中扩增多核苷酸以选择性扩增目的同源多核苷酸。