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    • 3. 发明授权
    • Assay method for lipid component, assay composition, and process for
production of enzyme used therefor
    • 用于脂质组分的测定方法,测定组合物和用于生产酶的方法
    • US4491631A
    • 1985-01-01
    • US392010
    • 1982-06-25
    • Shigeyuki ImamuraHideo MisakiHidehiko IshikawaKazuo Matsuura
    • Shigeyuki ImamuraHideo MisakiHidehiko IshikawaKazuo Matsuura
    • C12N9/02C12N9/10C12N9/88C12Q1/25C12Q1/00C12N9/00C12N9/04C12Q1/26C12Q1/32C12Q1/42C12Q1/44C12Q1/46C12Q1/48C12Q1/60C12R1/38
    • C12Y103/99003C12N9/001C12N9/1029C12N9/88C12Q1/25Y10S435/874
    • An enzyme having enoyl-CoA hydratase activity, 3-hydroxyacyl-CoA dehydrogenase activity and 3-ketoacyl-CoA thiolase activity, all in the same enzyme, is produced by culturing the microorganism strain Pseudomonas fragi B-0771 FERM-P No. 5701, and isolating the enzyme thus produced from the culture medium. Such an enzyme is useful in an assay method for a fatty acid component in a sample, which fatty acid is originally present in the sample or is liberated from a fatty acid ester in the sample, comprising:(a) converting the fatty acid to acyl-CoA;(b) converting the thus-produced acyl-CoA to dehydroacyl-CoA;(c) converting the thus-produced dehydroacyl-CoA to hydroxyacyl-CoA;(d) converting the thus-produced hydroxyacyl-CoA to ketoacyl-CoA;(e) converting the thus-produced ketoacyl-CoA to acyl-CoA; and measuring the detectable changes in the reaction mixture.A composition suitable for such lipid assay comprisesATP or GTP,CoASH,NAD,acyl-CoA synthetase activity,acyl-CoA oxidase activity,enoyl-CoA hydratase activity,3-hydroxyacyl-CoA dehydrogenase activity, and3-ketoacyl-CoA thiolase activity,wherein the last three activities are supplied by the new multi-active enzyme.
    • 通过培养微生物菌株Pseudomonas fragi B-0771 FERM-P No. 5701制备具有烯酰辅酶A水合酶活性,3-羟基酰基-CoA脱氢酶活性和3-酮酰基-CoA硫羟酸酶活性的酶,全部在同一酶中, 并从培养基中分离由此产生的酶。 这样的酶可用于样品中的脂肪酸组分的测定方法,该脂肪酸最初存在于样品中或从样品中的脂肪酸酯中释放出来,其包括:(a)将脂肪酸转化为酰基 -CoA; (b)将由此产生的酰基辅酶A转化为脱氢酰基-CoA; (c)将由此产生的脱氢酰基-CoA转化为羟基酰基-CoA; (d)将由此产生的羟基酰基CoA转化为酮酰基-CoA; (e)将由此产生的酮酰基-CoA转化成酰基-CoA; 并测量反应混合物中可检测的变化。 适用于这种脂质测定的组合物包括ATP或GTP,CoASH,NAD,酰基-CoA合成酶活性,酰基-CoA氧化酶活性,烯酰辅酶A水合酶活性,3-羟基酰基-CoA脱氢酶活性和3-酮酰基-CoA硫解酶活性 其中最后三种活性由新的多活性酶提供。
    • 8. 发明授权
    • Highly sensitive assay method for myo-inositol, composition for
practicing same, novel myo-inositol dehydrogenase, and process for
producing same
    • 肌醇的高灵敏度测定方法,实践相同的组合物,新型肌醇脱氢酶及其制备方法
    • US5356790A
    • 1994-10-18
    • US106693
    • 1993-08-16
    • Shigeru UedaMamoru TakahashiHideo MisakiShigeyuki ImamuraKazuo Matsuura
    • Shigeru UedaMamoru TakahashiHideo MisakiShigeyuki ImamuraKazuo Matsuura
    • C12N9/04C12Q1/02C12Q1/32C12Q1/26C07H1/00C12N11/00
    • C12N9/0006C12Q1/02C12Q1/32C12R1/07Y10S436/817
    • Myo-inositol in a specimen is assayed by reacting a specimen containing myo-inositol with:a) myo-inositol dehydrogenase using a thio-NADP group or thio-NAD group and an NADP group or NAD group as coenzymes, and which catalyzes a reversible reaction forming myo-inosose from myo-inositol,b ) A.sub.1 andc) B.sub.1to effect a cycling reaction ##STR1## wherein A.sub.1 is a thio-NADP group, thio-NAD group, NADP group or NAD group, A.sub.2 is a reduced form of A.sub.1, when A.sub.1 is a thio-NADP group or thio-NAD group, B.sub.1 is a reduced NADP group or reduced NAD group and when A.sub.1 is an NADP group or NAD group, B.sub.1 is a reduced thio-NADP group or reduced thio-NAD group, and wherein B.sub.2 is an oxidized form of B.sub.1. The change in the amount of A.sub.2 generated or B.sub.1 consumed by the cycling reaction is measured to perform the assay. A composition for performing the assay comprises the above myo-inositol dehydrogenase, as well as the above components A.sub.1 and B.sub.1. The myo-inositol dehydrogenase can be produced by culturing a suitable microorganism belonging to genus Bacillus, particularly Bacillus sp. No. 3 FERM BP-3013.
    • 通过使含有肌醇的样品与以下物质反应来测定样品中的肌醇:a)使用硫代NADP基团或硫代NAD基团和NADP基团或NAD基团作为辅酶的肌醇脱氢酶,并催化可逆的 由肌球蛋白形成肌内单糖的反应,b)A1和c)B1进行循环反应,其中A1是硫代NADP基团,硫代NAD基团,NADP基团或NAD基团,A2是还原形式 的A1,当A1是硫代NADP基团或硫代NAD基团时,B1是还原的NADP基团或还原的NAD基团,当A1是NADP基团或NAD基团时,B1是还原的硫代NADP基团或还原的硫代 - NAD基,其中B2是B1的氧化形式。 测量由循环反应消耗的A2产生量或B1的量的变化以进行测定。 用于进行测定的组合物包含上述肌醇脱氢酶,以及上述组分A1和B1。 肌醇脱氢酶可以通过培养属于芽孢杆菌属(Bacillus),特别是芽孢杆菌属(Bacillus sp。)的合适的微生物来产生。 3号FERM BP-3013。
    • 9. 发明授权
    • Nucleoside oxidase and process for making same, and process and kit for
using same
    • 核苷氧化酶及其制备方法,及其使用方法和试剂盒
    • US4385112A
    • 1983-05-24
    • US292154
    • 1981-08-12
    • Hideo MisakiShigeru IkutaKazuo Matsuura
    • Hideo MisakiShigeru IkutaKazuo Matsuura
    • C07H19/04C07H21/00C12N9/04C12P19/28C12P19/38C12Q1/26C12Q1/28C12N9/06C12P7/40C12P13/00C12Q1/34C12Q1/42C12Q1/68C12R1/40
    • C07H21/00C07H19/04C12N9/0006C12P19/28C12P19/38C12Q1/26C12Q1/28C12Y101/03028Y10S435/81Y10S435/877
    • A microorganism strain B-0781 belonging to the genus Pseudomonas isolated from a soil sample from an onion field in Japan, produces a novel enzyme nucleoside oxidase having substrate specificity on various nucleosides and enzyme action to catalyze enzymatic reactions involving various nucleosides. The novel nucleoside oxidase is produced by culturing a nucleoside-oxidase-producing microorganism belonging to the genus Pseudomonas in a nutrient medium containing assimilable carbon and nitrogen and inorganic salt, and isolating the thus-formed nucleoside oxidase from the cultured cells. Various nucleoside-5'-carboxylic acids can be produced, by incubating the novel nucleoside oxidase with a nucleoside having a 5'-hydroxymethyl group, in an aqueous medium under aerobic conditions, and isolating the thus-formed nucleoside-5'-carboxylic acid from the incubation medium. Assay methods for nucleosides in liquid samples are provided, which comprise incubating the sample with nucleoside oxidase, thereby consuming oxygen and generating hydrogen peroxide and nucleoside-5'-carboxylic acid by acting on nucleoside, and quantitatively determining consumed oxygen or liberated hydrogen peroxide. A kit for nucleoside assay is provided, which contains the recited ingredients.
    • 属于从日本洋葱田土壤样品中分离出的假单胞菌属的微生物菌株B-0781产生了对各种核苷具有底物特异性和酶作用的新的酶核苷氧化酶,以催化涉及各种核苷的酶反应。 通过在含有可同化碳,氮和无机盐的营养培养基中培养属于假单胞菌属的核苷 - 氧化酶产生微生物,并从培养细胞中分离由此形成的核苷氧化酶,从而产生新的核苷氧化酶。 通过在有氧条件下在含水介质中孵育新的核苷氧化酶与具有5'-羟甲基的核苷,可以制备各种核苷-5'-羧酸,并分离由此形成的核苷-5'-羧酸 从培养基中。 提供液体样品中核苷的测定方法,其包括将样品与核苷氧化酶孵育,由此消耗氧并通过作用于核苷产生过氧化氢和核苷-5'-羧酸,并定量测定消耗的氧气或释放的过氧化氢。 提供了用于核苷测定的试剂盒,其包含所述的成分。
    • 10. 发明授权
    • Analytical method making use of monoglyceride lipase
    • 使用单甘油脂肪酶的分析方法
    • US5162201A
    • 1992-11-10
    • US668169
    • 1991-03-12
    • Shigeyuki ImamuraMamoru TakahasiHideo MisakiKazuo Matsuura
    • Shigeyuki ImamuraMamoru TakahasiHideo MisakiKazuo Matsuura
    • C12N9/18C12Q1/44
    • C12Q1/44C12N9/18
    • Disclosed herein is a novel monoglygeride lipase at least capable of catalyzing an enzymatic reaction of the following equation (a) and as substrate specificity, capable of acting on monoglyceride but incapable of acting on diglyceride and triglyceride:Monoglyceride+H.sub.2 O.fwdarw.Glycerol+Fatty acid (a)The monoglyceride lipase is produced by culturing a specific monoglyceride lipase producing microorganism of Bacillus and then collecting the monoglyceride lipase from the resulting culture. A method is also disclosed for the analysis of a monoglyceride-containing sample solution. The monoglyceride lipase is caused to act on the sample solution upon measurement of the monoglyceride in the sample solution. Either one of glycerol and the fatty acid formed in accordance with the equation (a) is then measured.
    • 本文公开了一种新颖的单甙脂肪酶,其至少能够催化以下等式(a)的酶反应和作为底物特异性,其能够作用于甘油单酯但不能作用于甘油二酯和甘油三酸酯:单甘油酯+ H 2 O→甘油+脂肪酸 (a)单酸甘油酯脂肪酶是通过培养产生芽孢杆菌的特定单酸甘油酯脂肪酶微生物,然后从得到的培养物中收集单甘油脂肪酶产生的。 还公开了用于分析含单甘油酯的样品溶液的方法。 当测量样品溶液中的单甘油酯时,使甘油单酯脂肪酶作用于样品溶液。 然后测量根据方程(a)形成的甘油和脂肪酸中的任一种。