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    • 1. 发明授权
    • Enhanced in vitro synthesis of biological macromolecules using a novel ATP regeneration system
    • 使用新型ATP再生系统增强生物大分子的体外合成
    • US06168931A
    • 2001-01-02
    • US09270814
    • 1999-03-17
    • James R. SwartzDong-Myung Kim
    • James R. SwartzDong-Myung Kim
    • C12P2106
    • C12N9/1033C07K14/5255C12P21/00
    • Compositions and methods are provided for the enhanced in vitro synthesis of biological molecules where ATP is required for synthesis. Of particular interest is the synthesis of polymers, e.g. nucleic acids, polypeptides, and complex carbohydrates. A homeostatic system is used for production of ATP, where the required high energy phosphate bonds are generated in situ, e.g. through coupling with an oxidation reaction. The homeostatic energy source will typically lack high energy phosphate bonds itself, and will therefore utilize free phosphate in the reaction mix during generation of ATP. Since inorganic phosphate can be an inhibitory by-product of synthesis, the period of time when synthesis is maintained in vitro can be extended. The homeostatic energy source is provided in combination with an enzyme that catalyzes the creation of high energy phosphate bonds and with an enzyme that can use that high energy phosphate bond to regenerate ATP.
    • 提供了用于合成需要ATP的生物分子的增强的体外合成的组合物和方法。 特别令人感兴趣的是聚合物的合成,例如 核酸,多肽和复合碳水化合物。 使用稳态系统来生产ATP,其中所需的高能磷酸键是原位生成的。 通过与氧化反应的偶联。 稳态能源本身通常缺乏高能量磷酸键,因此在产生ATP期间将在反应混合物中利用游离磷酸盐。 由于无机磷酸盐可以是合成的抑制副产物,因此可以延长合成时间在体外保持的时间。 稳态能量源与催化高能磷酸键的酶的结合,以及能够使用高能磷酸键重新生成ATP的酶组合提供。
    • 2. 发明申请
    • Efficient Cell-Free Hydrogen Production
    • 高效无细胞氢生产
    • US20120077242A1
    • 2012-03-29
    • US13246542
    • 2011-09-27
    • James R. SwartzPhillip Smith
    • James R. SwartzPhillip Smith
    • C12P3/00C12N9/02
    • C12P3/00
    • Cell-free synthesis of hydrogen from glucose and cellulosic hydrolysates is provided. Bacterial cells are modified to express high levels of (i) active [FeFe] hydrogenase; (ii) ferredoxin; and (iii) ferredoxin-NADP-reductase (FNR). The cells are then lysed and the lysate is combined with substrate during a production phase, where H2 is produced. The substrate is typically a sugar, e.g. glucose, cellulose hydrolysates, fructose, and the like, including pentose sugars capable of entering the bacterial pentose phosphate cycle. The reaction mixture may be further supplemented with one or more of niacin as a precursor to nicotinamide; a nuclease, particularly a ribonuclease, to break down nucleic acids and generate adenine; and iodoacetamide to inactivate the normal cellular glycolytic pathway and thus maximize conversion yields.
    • 提供了从葡萄糖和纤维素水解产物中无细胞合成氢气。 细菌细胞被修饰以表达高水平的(i)活性[FeFe]氢化酶; (二)铁氧还蛋白; 和(iii)铁氧还蛋白-NADP-还原酶(FNR)。 然后将细胞裂解,并在生产阶段中将裂解物与底物结合,其中产生H2。 底物通常是糖,例如 葡萄糖,纤维素水解物,果糖等,包括能够进入细菌戊糖磷酸循环的戊糖。 反应混合物可进一步补充一种或多种作为烟酰胺前体的烟酸; 核酸酶,特别是核糖核酸酶,以分解核酸并产生腺嘌呤; 和碘乙酰胺灭活正常细胞糖酵解途径,从而使转化产率最大化。
    • 4. 发明授权
    • Process for bacterial production of polypeptides
    • 细菌生产多肽的方法
    • US5639635A
    • 1997-06-17
    • US333912
    • 1994-11-03
    • John C. JolyJames R. Swartz
    • John C. JolyJames R. Swartz
    • C12N15/09C07K1/113C07K14/245C07K14/47C07K14/65C12N1/21C12N9/02C12N9/90C12N15/70C12P21/00C12P21/02C12R1/19C12P21/06
    • C12N9/0051C07K1/1133C07K14/245C07K14/65C12N15/70C12N9/90C12P21/02C07K2319/00
    • A process is provided for producing a heterologous polypeptide in bacteria, which process comprises:(a) culturing bacterial cells, which cells comprise nucleic acid encoding a DsbA or DsbC protein, nucleic acid encoding the heterologous polypeptide, a signal sequence for secretion of both the DsbA or DsbC protein and the heterologous polypeptide, and an inducible promoter for both the nucleic acid encoding the DsbA or DsbC protein and the nucleic acid encoding the heterologous polypeptide, under conditions whereby expression of the nucleic acid encoding the DsbA or DsbC protein is induced prior to induction of the expression of the nucleic acid encoding the heterologous polypeptide, and under conditions whereby either both the heterologous polypeptide and the DsbA or DsbC protein are secreted into the periplasm of the bacteria or the heterologous polypeptide is secreted into the medium in which the bacterial cells are cultured; and(b) recovering the heterologous polypeptide from the periplasm or the culture medium.
    • 提供了用于在细菌中产生异源多肽的方法,该方法包括:(a)培养细菌细胞,所述细胞包含编码DsbA或DsbC蛋白的核酸,编码异源多肽的核酸,用于分泌两者的信号序列 DsbA或DsbC蛋白和异源多肽,以及用于编码DsbA或DsbC蛋白的核酸和编码异源多肽的核酸的诱导型启动子,其条件是先前诱导编码DsbA或DsbC蛋白的核酸的表达 诱导编码异源多肽的核酸的表达,并且在异源多肽和DsbA或DsbC蛋白分泌到细菌周质中的异常条件下,或异源多肽分泌到细菌的培养基中 培养细胞; 和(b)从周质或培养基中回收异源多肽。
    • 7. 发明授权
    • Computer controlled motor
    • 计算机控制电机
    • US4554499A
    • 1985-11-19
    • US664110
    • 1984-10-24
    • Leonard H. ShermanJames R. SwartzJames M. Williams
    • Leonard H. ShermanJames R. SwartzJames M. Williams
    • G05D7/06H02P7/00H02P8/00
    • G05D7/0676H02P7/00Y10T137/0329
    • To control a motor, a pulse width modulated signal from a computer is fed to a capacitor which stores each pulse as a voltage proportional to the width of the pulse, the capacitor being reset to zero by a leading edge reset circuit. The voltage on the capacitor is sampled by a sample/hold circuit the output of which is fed to a converter which converts the voltage signal to a frequency signal exponentially related to the voltage, and hence to the pulse width. The converter then powers a driver which drives the motor. The exponential relationship between the pulses and the signal fed to the motor permits a large variationin the frequency signal based on a small variation in pulse width and hence permits accurate control of the motor.
    • 为了控制电动机,来自计算机的脉冲宽度调制信号被馈送到电容器,其将每个脉冲存储为与脉冲宽度成比例的电压,电容器由前沿复位电路复位为零。 电容器上的电压由采样/保持电路采样,该采样/保持电路的输出被馈送到转换器,该转换器将电压信号转换为与电压成指数相关的频率信号,并因此转换成脉冲宽度。 然后,转换器为驱动电机的驱动器供电。 脉冲和馈送到电机的信号之间的指数关系允许基于脉冲宽度的小变化对频率信号进行大的变化,从而允许电机的精确控制。