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    • 2. 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。
    • 6. 发明授权
    • Method for the quantitative determination of D-3-hydroxybutyric acid and
acetoacetic acid, and analytical reagent therefor
    • 定量测定D-3-羟基丁酸和乙酰乙酸的方法及其分析试剂
    • US5633143A
    • 1997-05-27
    • US244450
    • 1994-05-26
    • Shigeru UedaHideo MisakiShigeru IkutaMamoru Takahashi
    • Shigeru UedaHideo MisakiShigeru IkutaMamoru Takahashi
    • C12Q1/32C12Q1/52G01N31/00G01N33/53
    • C12Q1/32Y10S435/966Y10S435/973Y10T436/104998
    • Disclosed is a method for the quantitative determination of D-3-hydroxybutyric acid and acetoacetic acid, which comprises reacting a biological sample containing D-3-hydroxybutyric acid and acetoacetic acid, with a reagent comprising: (1) a D-3-hydroxybutyrate dehydrogenase, (2) A.sub.1 and (3) B.sub.1, the components (1), (2) and (3) participating in the following cycling reaction: ##STR1## thereby effecting the enzymatic cycling reaction, and measuring a change in the amount of A.sub.2 formed or the amount of B.sub.1 consumed. Also disclosed is an analytical reagent comprising the components (1), (2) and (3) for use in the above method. The method and the analytical reagent ensure rapidness and accuracy in the determination of D-3-hydroxybutyric acid and acetoacetic acid, even with the use of a small quantity of a biological sample, so that they are very useful in application fields, such as clinical diagnosis and food testing.
    • PCT No.PCT / JP91 / 01706 Sec。 371日期:1994年5月26日 102(e)日期1994年5月26日PCT 1991年12月12日PCT PCT。 公开号WO93 / 12254 日期:1993年6月24日公开是定量测定D-3-羟基丁酸和乙酰乙酸的方法,其包括使含有D-3-羟基丁酸和乙酰乙酸的生物样品与包含以下物质的试剂反应:(1) D-3-羟基丁酸脱氢酶,(2)A1和(3)B1,参与以下循环反应的组分(1),(2)和(3):进行酶循环反应,并测量 形成的A2的量的变化或消耗的B1的量。 还公开了包含用于上述方法的组分(1),(2)和(3)的分析试剂。 该方法和分析试剂确保即使使用少量生物样品也能快速,准确地测定D-3-羟基丁酸和乙酰乙酸,因此它们在临床应用领域非常有用 诊断和食品检测。
    • 9. 发明授权
    • Radioisotope iodine-labeled 1.alpha. (or 24R), 25-dihydroxy vitamin D.sub.3
    • 放射性同位素碘标记的1α(或24R),25-二羟基维生素D3衍生物
    • US5214170A
    • 1993-05-25
    • US827151
    • 1992-01-27
    • Miyuki TanabeShigeru Ikuta
    • Miyuki TanabeShigeru Ikuta
    • C07C401/00
    • C07C401/00Y02P20/55Y10T436/173845
    • A novel 1.alpha. (or 24R), 25-dihydroxy vitamin D.sub.3 amino acid derivative of the formula ##STR1## wherein R.sub.1 is OH or --O--CO--A--NH.sub.2, and R.sub.2 and R.sub.3 are each selected from the group consisting of hydrogen, OH and --O--CO--A--NH.sub.2 ; wherein one of R.sub.2 and R.sub.3 is hydrogen, one of R.sub., R.sub.2 and R.sub.3 is OH, and one of R.sub.1, R.sub.2 and R.sub.3 is --O--CO--A--NH.sub.2 ; and wherein A is C.sub.1-10 alkylene, is produced by removing a protective group for the amino group, e.g. 9-fluorenylmethyloxycarbonyl, in the presence of a base in an inert solvent. A radioisotope iodine-labeled residue is then attached to the amino group to produce a derivative useful in the assay of 1.alpha. (or 24R), 25-dihydroxy vitamin D.sub.3 in a specimen.
    • 其中R 1是OH或-O-CO-A-NH 2的式1α(或24R),25-二羟基维生素D3氨基酸衍生物,其中R 1和R 2各自选自氢 ,OH和-O-CO-A-NH 2; 其中R2和R3中的一个是氢,R,R2和R3之一是OH,R1,R2和R3中的一个是-O-CO-A-NH2; 并且其中A为C 1-10亚烷基,是通过除去氨基的保护基来制备的。 9-芴基甲氧基羰基,在碱的存在下在惰性溶剂中。 然后将放射性同位素碘标记的残基连接到氨基上以产生可用于测定样品中1α(或24R),25-二羟基维生素D3的衍生物。