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    • 2. 发明申请
    • BACTERIAL MUTANTS AND USES THEREOF IN PROTEIN PRODUCTION
    • 细菌菌株及其在蛋白质生产中的应用
    • WO2011083059A1
    • 2011-07-14
    • PCT/EP2010/070683
    • 2010-12-23
    • UNIVERSITEIT GENTBEAUPREZ, Joeri
    • BEAUPREZ, Joeri
    • C07K14/245C12N15/70C12P21/02
    • C12N15/70C12P21/02
    • The present invention relates to a method for obtaining increased product yields and/or for eliminating by-product formation in micro-organisms, and to mutants and/or transformants for use in said methods. More particularly, it relates to bacterial mutants and/or transformants that are affected in the primary metabolism for enhanced product formation, for enhanced product yield and/or for eliminating production of by-products, especially mutants and/or transformants that are affected in the repression of the glyoxylate bypass and in the chromosomal gene expression in response to deprivation of oxygen or in response to absence/presence of carbon compounds such as glycerol, fatty acids, glyoxylate, acetate and the like.
    • 本发明涉及一种用于获得增加的产物产率和/或消除微生物中副产物形成的方法,以及用于所述方法的突变体和/或转化体。 更具体地说,它涉及在初级代谢中受影响以增强产物形成,提高产物产量和/或用于消除副产物,特别是受影响的突变体和/或转化体的产生的细菌突变体和/或转化体。 乙醛酸酯旁路的抑制和染色体基因表达响应于剥夺氧或响应于碳化合物如甘油,脂肪酸,乙醛酸盐,乙酸盐等的存在/存在。
    • 6. 发明申请
    • MUTANT MICROORGANISMS TO SYNTHESIZE COLANIC ACID, MANNOSYLATED AND/OR FUCOSYLATED OLIGOSACCHARIDES
    • 合成甘草酸,芒硝酸酯和/或FUCOSYLATED OLIGOSACCHARIDES的突变微生物
    • WO2013087884A1
    • 2013-06-20
    • PCT/EP2012/075639
    • 2012-12-14
    • UNIVERSITEIT GENT
    • BEAUPREZ, JoeriLEQUEUX, GaspardMAERTENS, Jo
    • C12R1/19C07K14/245C12N15/70
    • C12P19/04C07K14/245C12N15/52C12P7/40C12P19/12C12P19/32
    • The present invention relates to mutated and/or transformed microorganisms for the synthesis of various compounds. More specifically, the present invention discloses microorganisms mutated in the genes encoding for the regulators ArcA and IclR. The latter mutations result in a significant upregulation of the genes that are part of the colanic acid operon. Hence, said microorganisms are useful for the synthesis of any compound being part of the colanic acid pathway such as GDP-fucose, GDP-mannose and colanic acid, and/or, can be further used –starting form GDP-fucose as a precursor-to synthesize fucosylated oligosaccharides or -starting from GDP-mannose as a precursor –to synthesize mannosylated oligosaccharides. In addition, mutations in the genes coding for the transcriptional regulators ArcA and IclR lead to an acid resistance phenotype in the exponential growth phase allowing the synthesis of pH sensitive molecules or organic acids.
    • 本发明涉及用于合成各种化合物的突变和/或转化的微生物。 更具体地,本发明公开了在编码稳定剂ArcA和IclR的基因中突变的微生物。 后一种突变导致作为荚蛋酸操纵子一部分的基因的显着上调。 因此,所述微生物可用于合成作为荚状酸途径的一部分的任何化合物,例如GDP-岩藻糖,GDP-甘露糖和col烷酸,和/或可进一步使用 - 以GDP-岩藻糖为起始剂, 合成岩藻糖化寡糖或从GDP-甘露糖作为前体开始合成甘露糖基化寡糖。 此外,编码转录调节因子ArcA和IclR的基因中的突变导致指数生长期的耐酸性表型,允许合成pH敏感的分子或有机酸。