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    • 1. 发明申请
    • A METHOD FOR ACHIEVING IMPROVED POLYPEPTIDE EXPRESSION
    • 实现改进的多肽表达的方法
    • WO2008000632A1
    • 2008-01-03
    • PCT/EP2007/055943
    • 2007-06-15
    • DSM IP Assets B.V.ROUBOS, Johannes, AndriesPEIJ, VAN, Noël Nicolaas Maria Elisabeth
    • ROUBOS, Johannes, AndriesPEIJ, VAN, Noël Nicolaas Maria Elisabeth
    • C12N15/67
    • C12N15/67C12N9/242C12N9/92C12N15/80C12N15/81C12N2800/22
    • The present invention relates to methods of optimization of a protein coding sequences for expression in a given host cell. The methods apply genetic algorithms to optimise single codon fitness and/or codon pair fitness sequences coding for a predetermined amino acid sequence. In the algorithm generation of new sequence variants and subsequent selection of fitter variants is reiterated until the variant coding sequences reach a minimum value for single codon fitness and/or codon pair fitness. The invention also relates to a computer comprising a processor and memory, the processor being arranged to read from and write into the memory, the memory comprising data and instructions arranged to provide the processor with the capacity to perform the genetic algorithms for optimisation of single codon fitness and/or codon pair fitness. The invention further relates to nucleic acids comprising a coding sequence for a predetermined amino acid sequence, the coding sequence being optimised with respect to single codon fitness and/or codon pair fitness for a given host in the methods of the invention, to host cells comprising such nucleic acids and to methods for producing polypeptides and other fermentation products in which these host cells are used.
    • 本发明涉及用于在给定宿主细胞中表达的蛋白质编码序列的优化方法。 该方法应用遗传算法来优化编码预定氨基酸序列的单个密码子适合度和/或密码子对适应性序列。 在算法中重复生成新的序列变体并随后选择拟合变体,直到变体编码序列达到单个密码子适应度和/或密码子对适应度的最小值。 本发明还涉及一种包括处理器和存储器的计算机,所述处理器被布置为从存储器读取和写入存储器,所述存储器包括数据和指令,其被布置为向处理器提供执行遗传算法以优化单个密码子的能力 健身和/或密码子对健身。 本发明还涉及包含用于预定氨基酸序列的编码序列的核酸,所述编码序列针对本发明方法中给定宿主的单个密码子适合度和/或密码子对适应性优化至包含 这种核酸以及用于产生其中使用这些宿主细胞的多肽和其它发酵产物的方法。
    • 6. 发明申请
    • DNA BINDING SITE OF A TRANSCRIPTIONAL ACTIVATOR USEFUL IN GENE EXPRESSION
    • 转录激活因子基因表达的DNA结合位点
    • WO2007062936A2
    • 2007-06-07
    • PCT/EP2006/067734
    • 2006-10-24
    • DSM IP ASSETS B.V.PARENICOVA, LuciePEIJ, VAN, Noël Nicolaas Maria Elisabeth
    • PARENICOVA, LuciePEIJ, VAN, Noël Nicolaas Maria Elisabeth
    • C12N15/80
    • C12N15/80
    • We have discovered DNA binding sites which are specifically recognized by PrtT, a transcriptional activator for protease genes. The DNA binding site can be defined structurally by a consensus nucleotide sequence and functionally by PrtT's ability to regulate transcriptional activation through that sequence. Both PrtT and its cognate DNA binding site (i.e., the nucleotide sequence in each promoter that is recognized by PrtT) can be used in a gene expression system. Possession of only a PrtT transcriptional activator is insufficient, its cognate DNA binding site is necessary for recognition by PrtT (i.e., binding to the site and activating transcription under appropriate conditions). A functional site, such as one obtained from a wild-type fungal gene, will confer PrtT- dependent transcriptional activation on 3'-downstream sequences. A mutation of a wild- type promoter that results in a non-functional site will abolish PrtT-dependent transcriptional activation of 3'-downstream sequences. A mutation of a wild-type promoter that results in a more functional site will enhance PrtT-dependent transcriptional activation of 3'-downstream sequences.
    • 我们发现了特异性被蛋白酶基因转录激活因子PrtT识别的DNA结合位点。 DNA结合位点可以由共有核苷酸序列在结构上定义,并在功能上由PrtT通过该序列调节转录激活的能力来定义。 PrtT及其同源DNA结合位点(即每个启动子中被PrtT识别的核苷酸序列)都可用于基因表达系统。 仅拥有PrtT转录激活因子是不够的,其同源DNA结合位点对于PrtT识别是必需的(即,在适当条件下与该位点结合并激活转录)。 功能位点,例如从野生型真菌基因获得的位点,将赋予3'-下游序列上PrtT依赖性转录激活。 导致非功能性位点的野生型启动子的突变将消除3'-下游序列的PrtT依赖性转录激活。 导致更多功能位点的野生型启动子的突变将增强3'下游序列的PrtT依赖性转录激活。