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公开(公告)号:US4181575A
公开(公告)日:1980-01-01
申请号:US842001
申请日:1977-10-13
申请人: Wolfgang Gruber , Gunter Lang , Michael Nelboeck-Hochstetter , Peter Roeschlau , Hans Seidel , Detlef von Hoerschelmann
发明人: Wolfgang Gruber , Gunter Lang , Michael Nelboeck-Hochstetter , Peter Roeschlau , Hans Seidel , Detlef von Hoerschelmann
CPC分类号: C12N9/0006 , C12Q1/60
摘要: In a process for the determination of total or bound cholesterol by liberating any bound cholesterol using cholesterol esterase and simultaneously or subsequently determining the liberated cholesterol and any initially free cholesterol with a cholesterol reacting enzyme, the improvement comprising using as the cholesterol reacting enzyme an NAD or NADP-dependent cholesterol dehydrogenase obtained from an anaerobic microorganism, e.g., Eubacterium sp. ATCC 21408, or from mammalian tissue, e.g., liver.
摘要翻译: 在通过使用胆固醇酯酶释放任何结合的胆固醇并同时或随后使用胆固醇反应酶确定释放的胆固醇和任何初始游离胆固醇来测定总胆固醇或结合胆固醇的方法中,该改进包括将胆固醇反应酶用作NAD或 从厌氧微生物获得的NADP依赖性胆固醇脱氢酶,例如真杆菌属 ATCC 21408,或来自哺乳动物组织,例如肝脏。
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公开(公告)号:US4186052A
公开(公告)日:1980-01-29
申请号:US811422
申请日:1977-06-29
申请人: Albert Roder , Hans Mollering , Wolfgang Gruber , Klaus Beaucamp , Hans Seidel , Peter Stahl , Detlef von Hoerschelmann
发明人: Albert Roder , Hans Mollering , Wolfgang Gruber , Klaus Beaucamp , Hans Seidel , Peter Stahl , Detlef von Hoerschelmann
CPC分类号: C12N9/0065 , C12Q1/28
摘要: A novel peroxidase for reduced nicotinamide-adenine-dinucleotide is provided which peroxidase oxidizes reduced nicotinamide-adenine-dinucleotide with hydrogen peroxide to give nicotinamide-adenine-dinucleotide and water and is characterized by a Michaelis constant K.sub.Mto hydrogen peroxide of 2.8.times.10.sup.-5 M andto reduced nicotinamide-adenine-dinucleotide of 1.7.times.10.sup.-5 M,measured at 25.degree. C. in 0.2M tris buffer of pH 6.0, containing 0.1M potassium acetate. The peroxidase can be prepared by liberating the enzyme from Streptococcus faecalis ATCC 8043 by digestion or by treatment with a surface-active agent and isolating same from the enzyme solution obtained. Hydrogen peroxide is determined in a simple reaction or in a coupled reaction with a specific oxidase by contacting the said peroxidase with the H.sub.2 O.sub.2 producing reaction mixture at a pH of from 6.0 to 9.0 and measuring the change of extinction as a measure of H.sub.2 O.sub.2 and of the concentration of nicotinamide-adenine-dinucleotide initially present in said reaction mixture.
摘要翻译: 提供了一种用于还原型烟酰胺 - 腺嘌呤二核苷酸的新型过氧化物酶,其过氧化物酶用过氧化氢氧化还原型烟酰胺 - 腺嘌呤二核苷酸,得到烟酰胺 - 腺嘌呤二核苷酸和水,其特征在于具有2.8x10-5M的过氧化氢的米氏常数KM, 降低了1.7×10-5M的烟酰胺 - 腺嘌呤二核苷酸,在25℃下,在含有0.1M醋酸钾的0.2M Tris缓冲液pH6.0中测定。 过氧化物酶可以通过消化或通过用表面活性剂处理从粪链球菌ATCC 8043中释放酶制备,并从获得的酶溶液中分离。 过氧化氢在简单的反应或与特定氧化酶的偶联反应中通过使所述过氧化物酶与产生H 2 O 2的反应混合物在6.0至9.0的pH下接触并测定作为H 2 O 2和 最初存在于所述反应混合物中的烟酰胺 - 腺嘌呤二核苷酸的浓度。
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公开(公告)号:US4397952A
公开(公告)日:1983-08-09
申请号:US260480
申请日:1981-05-04
申请人: Detlef von Hoerschelmann , Hans Seidel , Gerhard Berger , Armin Masuth , Klaus Beaucamp , Wolfgang Gruber
发明人: Detlef von Hoerschelmann , Hans Seidel , Gerhard Berger , Armin Masuth , Klaus Beaucamp , Wolfgang Gruber
CPC分类号: C12N9/0006 , C12Q1/54 , C12R1/085 , Y10S435/834
摘要: The present invention provides a process for obtaining glucose dehydrogenase by culturing a micro-organism in an appropriate nutrient medium and obtaining the enzyme from the cell mass or from the culture medium, wherein the micro-organism cultured is Bacillus cereus DSM 1644. The nutrient medium used contains a carbon source which consists predominantly or solely of glycerol.
摘要翻译: 本发明提供了通过在合适的营养培养基中培养微生物并从细胞块或培养基获得酶的方法,其中培养的微生物是蜡状芽孢杆菌DSM 1644.营养培养基 使用的碳源主要或仅由甘油组成。
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