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    • 3. 发明申请
    • METABOLIC EVOLUTION OF ESCHERICHIS COLI STRAINS THAT PRODUCE ORGANIC ACIDS
    • 生产有机酸的ESCHERICHIS COLI菌株的代谢演化
    • US20120202259A1
    • 2012-08-09
    • US13394176
    • 2010-11-17
    • Tammy GrabarWei GongR. Rogers Yocum
    • Tammy GrabarWei GongR. Rogers Yocum
    • C12P7/40C12N1/21
    • C07K14/245C12P7/40C12P7/46C12P7/54
    • This invention relates to the metabolic evolution of a microbial organism previously optimized for producing an organic acid in commercially significant quantities under fermentative conditions using a hexose sugar as sole source of carbon in a minimal mineral medium. As a result of this metabolic evolution, the microbial organism acquires the ability to use pentose sugars derived from cellulosic materials for its growth while retaining the original growth kinetics, the rate of organic acid production and the ability to use hexose sugars as a source of carbon. This invention also discloses the genetic change in the microorganism that confers the ability to use both the hexose and pentose sugars simultaneously in the production of commercially significant quantities of organic acids.
    • 本发明涉及先前优化用于在发酵条件下以商业上显着的量生产有机酸的微生物生物的代谢进化,其中使用己糖作为最小矿物培养基中的唯一碳源。 作为这种代谢进化的结果,微生物生物体获得使用来自纤维素材料的戊糖的生长能力,同时保持原始生长动力学,有机酸生产速率和使用己糖作为碳源的能力 。 本发明还公开了赋予在生产商业上大量有机酸中同时使用己糖和戊糖的能力的微生物中的遗传变化。
    • 8. 发明授权
    • Use of dimethyl disulfide for methionine production in microoraganisms
    • 用二甲基二硫化物在微生物激素中生产甲硫氨酸
    • US08399214B2
    • 2013-03-19
    • US11988971
    • 2006-07-18
    • Oskar ZelderStefan HaefnerAndrea HeroldCorinna KlopproggeHartwig SchroderR. Rogers YocumMark K. Williams
    • Oskar ZelderStefan HaefnerAndrea HeroldCorinna KlopproggeHartwig SchroderR. Rogers YocumMark K. Williams
    • C12P1/00
    • C12P13/12
    • The present invention features improved processes and organisms for the production of methionine. The invention demonstrates that a ΔmetF organism or a ΔmetE AmetH organism, for example, mutants of C. glutamicum or E. coli, can use a methyl capped sulfide source, e.g., dimethyl disulfide (DMDS), as a source of both sulfur and a methyl group, bypassing the need for MetH/MetE and MetF activity and the need to reduce sulfate, for the synthesis of methionine. Also described in this patent are data implicating MetY (also called MetZ) as an enzyme that incorporates a methyl capped sulfide source, e.g., DMDS, into methionine. A ΔmetF ΔmetB strain of C. glutamicum can use a methyl capped sulfide source, e.g., DMDS, as a source of both sulfide and a methyl group. Furthermore, methionine production by engineered prototrophic organisms that overproduce O-acetyl-homoserine was improved by the addition of a methyl capped sulfide source, e.g., DMDS.
    • 本发明的特征在于用于生产甲硫氨酸的改进方法和生物体。 本发明证明,一种有机蛋白(MetF)生物体或一种具有谷氨酸棒状杆菌或大肠杆菌的突变体的MetE生物体可以使用例如二甲基二硫醚(DMDS)的甲基封端硫化物源作为 硫和甲基,绕过MetH / MetE和MetF活性的需要,需要还原硫酸盐,用于合成甲硫氨酸。 该专利中还描述的是涉及MetY(也称为MetZ)作为将甲基封端的硫化物源例如DMDS掺入甲硫氨酸的酶的数据。 A&Dgr; metF&Dgr;谷氨酸棒杆菌的metB菌株可以使用甲基封端的硫化物源,例如DMDS,作为硫化物和甲基的来源。 此外,通过加入甲基封端的硫化物源(例如DMDS),改善过量产生O-乙酰高丝氨酸的工程化原养殖生物体的甲硫氨酸生产。
    • 10. 发明授权
    • Methods and microorganisms for production of panto-compounds
    • 泛化合物生产方法和微生物
    • US08232081B2
    • 2012-07-31
    • US10984449
    • 2004-11-08
    • R. Rogers YocumThomas A. PattersonTheron HermannJanice G. Pero
    • R. Rogers YocumThomas A. PattersonTheron HermannJanice G. Pero
    • C12P13/04C12P13/02C12P7/42C12P7/18
    • C12P17/04C12N15/52C12P13/02
    • The present invention features methods of producing panto-compounds (e.g., pantothenate) using microorganisms in which the pantothenate biosynthetic pathway and/or the isoleucine-valine biosynthetic pathway and/or the coenzymeA biosynthetic pathway has been manipulated. Methods featuring ketopantoate reductase overexpressing microorganisms as well as aspartate α-decarboxylase overexpressing microorganisms are provided. Methods of producing panto-compounds in a precursor-independent manner and in high yield are described. Recombinant microorganisms, vectors, isolated nucleic acid molecules, genes and gene products useful in practicing the above methodologies are also provided. The present invention also features a previously unidentified microbial pantothenate kinase gene, coaX, as well as methods of producing panto-compounds utilizing microorganisms having modified pantothenate kinase activity. Recombinant microorganisms, vectors, isolated coaX nucleic acid molecules and purified CoaX proteins are featured. Also featured are methods for identifying pantothenate kinase modulators utilizing the recombinant microorganisms and/or purified CoaX proteins of the present invention.
    • 本发明的特征在于使用其中泛酸生物合成途径和/或异亮氨酸 - 缬氨酸生物合成途径和/或辅酶A生物合成途径已经被操纵的微生物来生产泛化合物(例如泛酸盐)的方法。 提供了酮过氧还原酶过表达微生物以及天冬氨酸α-脱羧酶过表达微生物的方法。 描述了以前体非依赖性方式和高产率生产泛化合物的方法。 还提供了用于实践上述方法的重组微生物,载体,分离的核酸分子,基因和基因产物。 本发明还具有以前未鉴定的微生物泛酸激酶基因coaX,以及利用具有改良的泛酸激酶活性的微生物产生泛化合物的方法。 重组微生物,载体,分离的coaX核酸分子和纯化的CoaX蛋白。 还特征在于利用本发明的重组微生物和/或纯化的CoaX蛋白鉴定泛酸激酶调节剂的方法。