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    • 1. 发明授权
    • Microbial production of actinol
    • 微生物生成的肌动蛋白
    • US06444460B1
    • 2002-09-03
    • US09375129
    • 1999-08-16
    • Sakayu ShimizuMasaru Wada
    • Sakayu ShimizuMasaru Wada
    • C12P726
    • C12R1/06C12P7/26C12P41/002C12R1/01C12R1/15
    • A process for making (4R, 6R)-4-hydroxy-2,2,6-trimethylcyclohexanone by contacting (6R)-2,2,6-trimethylcyclohexanedione with a microorganism which is selected from microorganisms of the genera Cellulomonas, Corynebacterium, Planococcus and Arthrobacter and which is capable of the selective asymmetric reduction of (6R)-2,2,6-trimethylcyclohexanedione to (4R, 6R)-4-hydroxy-2,2,6-trimethylcyclohexanone, and recovering the resulting (4R, 6R)-4-hydroxy-2,2,6-trimethylcyclohexanone from the reaction mixture. The selective asymmetric reduction can be effected in the presence of a co-factor, such as, nicotinamide adenine dinucleotide (NAD), nicotinamide adenine dinucleotide phosphate (NADP), or said co-factor with glucose and glucose dehydrogenase (GDH), and/or in the presence of a surfactant. The product is useful for the synthesis of carotenoids, such as, zeaxanthin.
    • 通过使(6R)-2,2,6-三甲基环己二酮与微生物接触,制备(4R,6R)-4-羟基-2,2,6-三甲基环己酮的方法,所述微生物选自Cellulomonas,Corynebacterium,Planococcus 并且能够(6R)-2,2,6-三甲基环己二酮选择性不对称还原成(4R,6R)-4-羟基-2,2,6-三甲基环己酮,并回收得到的(4R,6R )-4-羟基-2,2,6-三甲基环己酮。 选择性不对称还原可以在辅因子存在下进行,例如烟酰胺腺嘌呤二核苷酸(NAD),烟酰胺腺嘌呤二核苷酸磷酸(NADP)或与葡萄糖和葡萄糖脱氢酶(GDH)的所述辅因子,和/ 或在表面活性剂存在下。 该产品可用于合成类胡萝卜素,如玉米黄质。
    • 7. 发明授权
    • Levodione reductase
    • 左旋去氧还原酶
    • US06465228B1
    • 2002-10-15
    • US09495523
    • 2000-01-31
    • Shigeru NakamoriSakayu ShimizuMasaru Wada
    • Shigeru NakamoriSakayu ShimizuMasaru Wada
    • C12N902
    • C12N9/0008C12P7/26C12P41/002
    • A levodione reductase having the following physical properties is provided: molecular weight: from about 142,000 to about 155,000±10,000 (consisting of four homologous subunits having a molecular weight of 36,000±5,000); co-factor: nicotinamide adenine dinucleotide (AND/NADH); substrate specificity: active on levodione; optimum temperature: about 15° C. to about 20° C. at pH 7.0; optimum pH: 7.5; and activator: K+, Cs+, Rb+, Na+ and NH4+. The levodione reductase according to the present invention produces actinol, an important intermediate for the production of zeaxanthin, from levodione. This enzyme may be produced from a microorganism belonging to the genus Corynebacterium, preferably the microorganism Corynebacterium aquaticum AKU 611 (FERM BP-6448) or a functional equivalent, subculture, mutant or variant thereof. Also provided is a process for producing the levodione reductase that includes cultivating a microorganism of the genus Corynebacterium in an aqueous medium under aerobic conditions, disrupting the cells of the microorganism and isolating and purifying the levodione reductase from the cell-free extract. A process for producing actinol from levodione is also provided that includes contacting levodione with levodione reductase in the presence of the reduced form of nicotinamide adenine dinucleotide or a cell-free extract of the microorganism, and then isolating the resulting actinol from the reaction mixture.
    • 提供了具有以下物理性质的左旋二酮还原酶:分子量:约142,000至约155,000±10,000(由分子量为36,000±5,000的四个同源亚基组成); 辅因子:烟酰胺腺嘌呤二核苷酸(AND / NADH); 底物特异性:对左旋多巴有活性; 最适温度:约15℃至约20℃,pH 7.0; 最适pH:7.5; 和活化剂:K +,Cs +,Rb +,Na +和NH4 +。 根据本发明的左氧多糖还原酶从左旋二酮生产作为玉米黄质生产的重要中间体的肌动蛋白。 该酶可以由属于棒状杆菌属的微生物,优选微生物棒状杆菌属水杨酸AKU 611(FERM BP-6448)或其功能等同的传代培养,突变体或变体产生。 还提供了生产左旋体还原酶的方法,其包括在需氧条件下在水性介质中培养棒状杆菌属的微生物,破坏微生物的细胞并从无细胞提取物中分离和纯化左旋体还原酶。 还提供了用于从左旋二酮生产锕系元素的方法,包括在还原形式的烟酰胺腺嘌呤二核苷酸或微生物的无细胞提取物的存在下将左旋多糖与左旋二酮还原酶接触,然后从反应混合物中分离得到的锕系元素。
    • 9. 发明授权
    • Method of preparing 2-deoxyribose 5-phosphate
    • 2-脱氧核糖5-磷酸的制备方法
    • US07927843B2
    • 2011-04-19
    • US11878558
    • 2007-07-25
    • Sakayu ShimizuJun Ogawa
    • Sakayu ShimizuJun Ogawa
    • C12P19/02
    • C12R1/22C12N9/88C12N9/90C12P19/02
    • The present invention discloses a method of preparing 2-deoxyribose 5-phosphate by reacting glyceraldehyde 3-phosphate and acetaldehyde in the presence of either a microorganism itself which contains 2-deoxyribose-5-phosphate aldolase but substantially no phosphates or the enzyme derived from the microorganism. The present invention also discloses a method of preparing 2-deoxyribose 5-phosphate by reacting dihydroxyacetone phosphate and acetaldehyde in the presence of either a microorganism itself which contains 2-deoxyribose-5-phosphate aldolase and triose-phosphate isomerase but substantially no phosphates or the enzymes derived from the microorganism.
    • 本发明公开了一种在含有2-脱氧核糖-5-磷酸醛缩酶但基本上不含磷酸盐的微生物本身存在下使甘油醛-3-磷酸和乙醛反应制备2-脱氧核糖-5-磷酸的方法, 微生物。 本发明还公开了一种在含有2-脱氧核糖-5-磷酸醛缩酶和丙糖磷酸异构酶但基本上不含磷酸盐的微生物本身存在下使磷酸二羟丙酮和乙醛反应制备2-脱氧核糖-5-磷酸的方法,或者 源于微生物的酶。