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    • 4. 发明授权
    • L-glutamate oxidase
    • L-谷氨酸氧化酶
    • US07109008B2
    • 2006-09-19
    • US10257398
    • 2001-04-19
    • Kenji InagakiJiro ArimaMakoto AshiuchiToshiharu YagiHitoshi Kusakabe
    • Kenji InagakiJiro ArimaMakoto AshiuchiToshiharu YagiHitoshi Kusakabe
    • C12N9/02C12N1/20C12N15/00C12Q1/68C12Q1/34C12P21/04C07H21/04
    • C12Y104/03011C12N9/0022
    • The present invention provides a novel L-glutamate oxidase, a gene encoding the enzyme, and a method for producing the enzyme. By use of a gene encoding the enzyme, L-glutamate oxidase can be readily prepared at low costs through a recombinant DNA technique. The novel L-glutamate oxidase has the following physicochemical properties: (A) action: catalyzing the following reaction: L-glutamic acid+O2+H2O→α-ketoglutaric acid+H2O2+NH3; (B) substrate specificity: being specific to L-glutamic acid; (C) molecular weight and subunit structure: molecular weight as determined through SDS-polyacrylamide gel electrophoresis of 70,000±6,000, molecular weight as determined through gel filtration of 140,000±10,000, and being a dimer formed of the same subunits having a molecular weight of 70,000±6,000; (D) optimum pH: around pH 6.0 to 8.5; (E) heat stability: being stable up to 60° C. at a pH of 7.4 for 30 minutes; and (F) coenzyme: flavin adenine dinucleotide (FAD).
    • 本发明提供了一种新的L-谷氨酸氧化酶,一种编码该酶的基因及其制备方法。 通过使用编码该酶的基因,可以通过重组DNA技术以低成本容易地制备L-谷氨酸氧化酶。 新型L-谷氨酸氧化酶具有以下物理化学性质:(A)作用:催化以下反应:<?in-line-formula description =“In-line formula”end =“lead”?> L-谷氨酸+ O 2→2 +→2→O-酮戊二酸+ H 2 O 2 + NH 3 (B)底物特异性:特异于L-谷氨酸;(B)底物特异性: (C)分子量和亚基结构:通过SDS-聚丙烯酰胺凝胶电泳测定的分子量为70,000±6,000,通过凝胶过滤测定的分子量为140,000±10,000,并且是由相同亚单位形成的二聚体,其分子量为 70,000±6,000; (D)最适pH:pH 6.0〜8.5左右; (E)热稳定性:在pH 7.4时稳定30分钟,稳定至60℃; 和(F)辅酶:黄素腺嘌呤二核苷酸(FAD)。
    • 9. 发明申请
    • L-glutamate oxidase
    • L-谷氨酸氧化酶
    • US20060228790A1
    • 2006-10-12
    • US11399446
    • 2006-04-07
    • Kenji InagakiJiro ArimaMakoto AshiuchiToshiharu YagiHitoshi Kusakabe
    • Kenji InagakiJiro ArimaMakoto AshiuchiToshiharu YagiHitoshi Kusakabe
    • C12N9/06C07H21/04C12P21/06C12N1/21
    • C12Y104/03011C12N9/0022
    • The present invention provides a novel L-glutamate oxidase, a gene encoding the enzyme, and a method for producing the enzyme. By use of a gene encoding the enzyme, L-glutamate oxidase can be readily prepared at low costs through a recombinant DNA technique. The novel L-glutamate oxidase has the following physicochemical properties: (A) action: catalyzing the following reaction: L-glutamic acid+O2+H2O→α-ketoglutaric acid+H2O2+NH3; (B) substrate specificity: being specific to L-glutamic acid; (C) molecular weight and subunit structure: molecular weight as determined through SDS-polyacrylamide gel electrophoresis of 70,000±6,000, molecular weight as determined through gel filtration of 140,000±10,000, and being a dimer formed of the same subunits having a molecular weight of 70,000±6,000; (D) optimum pH: around pH 6.0 to 8.5; (E) heat stability: being stable up to 60° C. at a pH of 7.4 for 30 minutes; and (F) coenzyme: flavin adenine dinucleotide (FAD).
    • 本发明提供了一种新的L-谷氨酸氧化酶,一种编码该酶的基因及其制备方法。 通过使用编码该酶的基因,可以通过重组DNA技术以低成本容易地制备L-谷氨酸氧化酶。 新型L-谷氨酸氧化酶具有以下物理化学性质:(A)作用:催化以下反应:<?in-line-formula description =“In-line formula”end =“lead”?> L-谷氨酸+ O 2→2 +→2→O-酮戊二酸+ H 2 O 2 + NH 3 (B)底物特异性:特异于L-谷氨酸;(B)底物特异性: (C)分子量和亚基结构:通过SDS-聚丙烯酰胺凝胶电泳测定的分子量为70,000±6,000,通过凝胶过滤测定的分子量为140,000±10,000,并且是由相同亚单位形成的二聚体,其分子量为 70,000±6,000; (D)最适pH:pH 6.0〜8.5左右; (E)热稳定性:在pH 7.4时稳定30分钟,稳定至60℃; 和(F)辅酶:黄素腺嘌呤二核苷酸(FAD)。