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    • 3. 发明授权
    • Method for quantitative determination of acetylputrescine in a mixture
    • 用于定量测定混合物中乙酰肌氨酸的方法
    • US4617263A
    • 1986-10-14
    • US776162
    • 1985-09-13
    • Hideaki YamadaShogo OtsujiKimiyasu IsobeKuniyoshi MatsunagaTadahiko Inukai
    • Hideaki YamadaShogo OtsujiKimiyasu IsobeKuniyoshi MatsunagaTadahiko Inukai
    • G01N33/52C12Q1/26G01N33/50
    • C12Q1/26
    • A rapid and reliable method is proposed for the quantitative determination of the individual free and acetylated polyamines, i.e. spermine, spermidine, putrescine, acetylspermine, N.sup.1 - and N.sup.8 -acetylspermidines and acetylputrescine in the body fluid of a patient suffering cancer or other diseases to facilitate diagnosis and therapeutic treatment. The method comprises subjecting the aqueous fluid to several enzymatic oxidative decomposition reactions of the polyamines in sequence or in combination by use of the 4 enzymes, i.e. polyamine oxidase AT-1, polyamine oxidase PC-3, putrescine oxidase and acetylputrescine oxidase, and determining, preferably photometrically, the amount of hydrogen peroxide formed as a byproduct in each of the reaction steps followed by setting up a set of simultaneous equations to give the respective amounts of the individual polyamines as a function of the amounts of the hydrogen peroxide formed in the reaction steps and solving the simultaneous equations.
    • 提出了一种快速可靠的方法,用于定量测定患有癌症或其他疾病的患者的体液中的个体游离和乙酰化多胺,即精胺,亚精胺,腐胺,乙酰精胺,N1-和N8-乙酰精氨酸和乙酰胞嘧啶 诊断和治疗。 该方法包括通过使用4种酶,即多胺氧化酶AT-1,多胺氧化酶PC-3,腐胺氧化酶和乙酰​​胸腺嘧啶氧化酶,依次或组合地对含水液体进行多种酶的氧化分解反应, 优选光度计,在每个反应步骤中作为副产物形成的过氧化氢的量随后建立一组联立方程,以得到作为在反应中形成的过氧化氢的量的函数的各个多胺的各自量 步骤和求解联立方程。
    • 4. 发明授权
    • Method for the quantitative determination of individual polyamine
components in a mixture
    • 用于定量测定混合物中单个多胺组分的方法
    • US4550078A
    • 1985-10-29
    • US495677
    • 1983-05-18
    • Hideaki YamadaShogo OtsujiKimiyasu IsobeKuniyoshi MatsunagaTadahiko Inukai
    • Hideaki YamadaShogo OtsujiKimiyasu IsobeKuniyoshi MatsunagaTadahiko Inukai
    • G01N33/52C12Q1/26G01N33/50
    • C12Q1/26
    • A rapid and reliable method is proposed for the quantitative determination of the individual free and acetylated polyamines, i.e. spermine, spermidine, putrescine, acetylspermine, N.sup.1 - and N.sup.8 -acetylspermidines and acetylputrescine in the body fluid of a patient suffering cancer or other deseases to facilitate diagnosis and therapeutic treatment. The method comprises subjecting the aqueous fluid to several enzymatic oxidative decomposition reactions of the polyamines in sequence or in combination by use of the 4 enzymes, i.e. polyamine oxidase AT-1, polyamine oxidase PC-3, putrescine oxidase and acetylputrescine oxidase, and determining, preferably photometrically, the amount of hydrogen peroxide formed as a byproduct in each of the reaction steps followed by setting up a set of simultaneous equations to give the respective amounts of the individual polyamines as a function of the amounts of the hydrogen peroxide formed in the reaction steps and solving the simultaneous equations.
    • 提出了一种快速可靠的方法,用于定量测定患有癌症或其他疾病的患者的体液中的各种游离和乙酰化多胺,即精胺,亚精胺,腐胺,乙酰精胺,N1-和N8-乙酰哌啶和乙酰吗啡 诊断和治疗。 该方法包括通过使用4种酶,即多胺氧化酶AT-1,多胺氧化酶PC-3,腐胺氧化酶和乙酰​​胸腺嘧啶氧化酶,依次或组合地对含水液体进行多种酶的氧化分解反应, 优选光度计,在每个反应步骤中作为副产物形成的过氧化氢的量随后建立一组联立方程,以得到作为在反应中形成的过氧化氢的量的函数的各个多胺的各自量 步骤和求解联立方程。
    • 6. 发明申请
    • D-AMINOACYLASE
    • D-氨基酸
    • US20120149071A1
    • 2012-06-14
    • US13345399
    • 2012-01-06
    • Kimiyasu IsobeSeiki Yamaguchi
    • Kimiyasu IsobeSeiki Yamaguchi
    • C12N9/80C12N1/20C12P13/04C12N1/21C12N15/55C12N15/74
    • C12N9/80
    • A D-aminoacylase having a high substrate specificity is provided. This D-aminoacylase can produce D-amino acids from N-acetyl-D,L-amino acids conveniently and efficiently at a low cost.A D-aminoacylase produced by a microorganism of genus Defluvibacter; which acts on a N-acetyl-D-amino acid; which has a molecular weight (as determined by electrophoresis) of about 55,000 daltons, and an isoelectric point (as determined by two-dimensional electrophoresis for denatured system) of 5.3; which acts on N-acetyl-D-valine, N-acetyl-D-leucine, and the like, but not on N-acetyl-L-valine, N-acetyl-L-leucine, and the like; which has an optimal temperature of 37° C. (pH 8) and an optimal pH value of 8 to 8.5 at 37° C.; and whose activity is inhibited by Mn2+, Co2+, Ni2+, and Zn2+ each at 1 mmol/L, and by dithiothreitol, 2-mercaptoethanol, o-phenanthroline, and L-cysteine each at 5 mmol/L.
    • 提供了具有高底物特异性的D-氨基酸酰化酶。 该D-氨基酸酶可以以低成本方便且有效地从N-乙酰基-D,L-氨基酸产生D-氨基酸。 由去纤维杆菌属的微生物产生的D-氨基酸酰化酶; 其作用于N-乙酰基-D-氨基酸; 其具有约55,000道尔顿的分子量(通过电泳测定)和5.3的等电点(通过用于变性体系的二维电泳测定); 其作用于N-乙酰基-D-缬氨酸,N-乙酰基-D-亮氨酸等,但不适用于N-乙酰基-L-缬氨酸,N-乙酰基-L-亮氨酸等; 其最适温度为37℃(pH8),最适pH值为8〜8.5,在37℃下。 Mn2 +,Co2 +,Ni2 +和Zn2 +各自以1 mmol / L的速度抑制其活性,二硫苏糖醇,2-巯基乙醇,邻菲咯啉和L-半胱氨酸各自以5 mmol / L的速度进行抑制。
    • 8. 发明申请
    • D-AMINOACYLASE
    • D-氨基酸
    • US20080096244A1
    • 2008-04-24
    • US11627256
    • 2007-01-25
    • Kimiyasu IsobeSeiki YamaguchiMasayuki KobayashiShinya KumagaiTakami Sarashina
    • Kimiyasu IsobeSeiki YamaguchiMasayuki KobayashiShinya KumagaiTakami Sarashina
    • C12P21/04C12N1/20C12N15/00C12N15/11C12N9/00
    • C12N9/80
    • A D-aminoacylase having a high substrate specificity is provided. This D-aminoacylase can produce D-amino acids from N-acetyl-D,L-amino acids conveniently and efficiently at a low cost. A D-aminoacylase produced by a microorganism of genus Defluvibacter; which acts on a N-acetyl-D-amino acid; which has a molecular weight (as determined by electrophoresis) of about 55,000 daltons, and an isoelectric point (as determined by two-dimensional electrophoresis for denatured system) of 5.3; which acts on N-acetyl-D-valine, N-acetyl-D-leucine, and the like, but not on N-acetyl-L-valine, N-acetyl-L-leucine, and the like; which has an optimal temperature of 37° C. (pH 8) and an optimal pH value of 8 to 8.5 at 37° C.; and whose activity is inhibited by Mn2+, Co2+, Ni2+, and Zn2+ each at 1 mmol/L, and by dithiothreitol, 2-mercaptoethanol, o-phenanthroline, and L-cysteine each at 5 mmol/L.
    • 提供了具有高底物特异性的D-氨基酸酰化酶。 该D-氨基酸酶可以以低成本方便且有效地从N-乙酰基-D,L-氨基酸产生D-氨基酸。 由去纤维杆菌属的微生物产生的D-氨基酸酰化酶; 其作用于N-乙酰基-D-氨基酸; 其具有约55,000道尔顿的分子量(通过电泳测定)和5.3的等电点(通过用于变性体系的二维电泳测定); 其作用于N-乙酰基-D-缬氨酸,N-乙酰基-D-亮氨酸等,但不适用于N-乙酰基-L-缬氨酸,N-乙酰基-L-亮氨酸等; 其最适温度为37℃(pH8),最适pH值为8〜8.5,在37℃下。 并且其活性受到Mn 2+,Co 2+,Ni 2+,Zn 2+,Zn 2+, 每个为1mmol / L,二硫苏糖醇,2-巯基乙醇,邻菲咯啉和L-半胱氨酸各为5mmol / L。
    • 9. 发明申请
    • D-aminoacylase
    • D-氨基酰化酶
    • US20060172375A1
    • 2006-08-03
    • US10539281
    • 2003-12-17
    • Kimiyasu IsobeSeiki YamaguchiMasayuki KobayashiShinya KumagaiTakami Sarashina
    • Kimiyasu IsobeSeiki YamaguchiMasayuki KobayashiShinya KumagaiTakami Sarashina
    • C12P13/04C07H21/04C12P21/06C12N9/80C12N1/21C12N15/74
    • C12N9/80
    • A D-aminoacylase having a high substrate specificity is provided. This D-aminoacylase can produce D-amino acids from N-acetyl-D,L-amino acids conveniently and efficiently at a low cost. A D-aminoacylase produced by a microorganism of genus Defluvibacter; which acts on a N-acetyl-D-amino acid; which has a molecular weight (as determined by electrophoresis) of about 55,000 daltons, and an isoelectric point (as determined by two-dimensional electrophoresis for denatured system) of 5.3; which acts on N-acetyl-D-valine, N-acetyl-D-leucine, and the like, but not on N-acetyl-L-valine, N-acetyl-L-leucine, and the like; which has an optimal temperature of 37° C. (pH 8) and an optimal pH value of 8 to 8.5 at 37° C.; and whose activity is inhibited by Mn2+, Co2+, Ni2+, and Zn2+ each at 1 mmol/L, and by dithiothreitol, 2-mercaptoethanol, o-phenanthroline, and L-cysteine each at 5 mmol/L.
    • 提供了具有高底物特异性的D-氨基酸酰化酶。 该D-氨基酸酶可以以低成本方便且有效地从N-乙酰基-D,L-氨基酸产生D-氨基酸。 由去纤维杆菌属的微生物产生的D-氨基酸酰化酶; 其作用于N-乙酰基-D-氨基酸; 其具有约55,000道尔顿的分子量(通过电泳测定)和5.3的等电点(通过用于变性体系的二维电泳测定); 其作用于N-乙酰基-D-缬氨酸,N-乙酰基-D-亮氨酸等,但不适用于N-乙酰基-L-缬氨酸,N-乙酰基-L-亮氨酸等; 其最适温度为37℃(pH8),最适pH值为8〜8.5,在37℃下。 并且其活性受到Mn 2+,Co 2+,Ni 2+,Zn 2+,Zn 2+, 每个为1mmol / L,二硫苏糖醇,2-巯基乙醇,邻菲咯啉和L-半胱氨酸各为5mmol / L。