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    • 3. 发明专利
    • Immobilized enzyme
    • 稳定的酶
    • JPS58187186A
    • 1983-11-01
    • JP6823882
    • 1982-04-23
    • Wako Pure Chem Ind Ltd
    • SAKATA YOSHITSUGUMATSUO TETSUYATOKIOKA NOBUYUKI
    • C12N9/52C12N9/48C12N11/02
    • PURPOSE: An immobilized enzyme, prepared by linking a lysyl endopeptidase to a water-insoluble carrier or crosslinking the lysyl endopeptidase with a crosslinking agent, having a very high activity, and exhibiting a high stability even in a wide range of pH or various media.
      CONSTITUTION: An immobilized enzyme prepared by linking lysyl endopeptidase produced by Achromobacter lyticus M497-1, e.g. Achromobacter protease I , to a water-insoluble carrier, e.g. a polysaccharide such as cellulose, agarose or dextran, or cation exchange resin or cation exchange cellulose, or crosslinking the lysyl endopeptidase with a crosslinking agent, e.g. glutaraldehyde or toluene diisocyanate.
      COPYRIGHT: (C)1983,JPO&Japio
    • 目的:通过将赖氨酰内肽酶与水不溶性载体连接或用交联剂交联赖氨酰内肽酶,具有非常高的活性并且甚至在宽范围的pH或各种培养基中表现出高稳定性的固定化酶。 构成:通过将由无色杆菌M497-1产生的赖氨酰内肽酶,例如, 无色杆菌蛋白酶I,与水不溶性载体,例如 多糖如纤维素,琼脂糖或葡聚糖,或阳离子交换树脂或阳离子交换纤维素,或者用交联剂交联赖氨酰肽链内切酶。 戊二醛或甲苯二异氰酸酯。
    • 5. 发明专利
    • METHOD FOR QUANTIFYING ENDOTOXIN
    • JPS62110153A
    • 1987-05-21
    • JP7029585
    • 1985-04-03
    • WAKO PURE CHEM IND LTD
    • SAKATA YOSHITSUGUMATSUO TETSUYATAKAOKA FUMIOISHI HARUKI
    • G01N33/50A61K9/08A61K38/16G01N33/579
    • PURPOSE:To accurately and simply measure the quantity of endotoxin in a specimen exerting effect on endotoxin gelling reaction, by comparing calibration curves obtained by adding endotoxin to a specimen to be examined or distilled water at various concns. CONSTITUTION:At first, endotoxin is added to distilled water free from endotoxin at various concns. to form calibration curves. Next, endotoxin is added to a specimen to be examined at various concns. in the same way to form calibration curves in the coexistence of the specimen. In this case, if the specimen to be examined is a substance exerting no gelling reaction (e.g., urokinase and human immunogloblin etc.), each calibration curve in the coexistence of the specimen coinsides with that calculated using distilled water. If said specimen is a substance inhibiting gelling reaction (e.g., mannitol and glucose etc.), each calibration curve in the coexistence of the specimen is upwardly shifted from that in the case of distilled water and, if the specimen is a substance promoting said reaction (e.g., dextran 40 and human serum albumin etc.), said calibration curve is downwardly shifted from that in the case of distilled water. Because both calibration curves originally has parallel relation to that in the case of distilled water, by comparing both of them, the content of endotoxin in the specimen to be examined can be calculated.
    • 6. 发明专利
    • Process for semisynthesis of human insulin
    • 人胰岛素半胱氨酸的方法
    • JPS5914798A
    • 1984-01-25
    • JP12391782
    • 1982-07-16
    • Wako Pure Chem Ind Ltd
    • SAKATA YOSHITSUGUSHINTANI AKINORIMATSUO TETSUYASUGIYAMA HARUHIKOMINAMII NOBUAKINAGAOKA JIYOUJI
    • C12P21/02
    • PURPOSE: To prepare human insulin from swine insulin, in high efficiency, by using water as the reaction solvent and acromobacter.protease I as the catalyst.
      CONSTITUTION: Swine insulin is made to react with threonine having carboxyl group protected with substituted or unsubstituted alkyl or aralkyl group in water or in an aqueous solution containing a small amount of an organic solvent miscible with water, in the presence of lysyl endopeptidase (Acromobacter.protease I) produced by Acromobacter lyticus at 0W50°C and 4W10pH, preferably under nearly neutral condition, to effect peptide exchange and obtain a human insulin derivative having carboxyl-protected threonine at B
      30 .
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:通过使用水作为反应溶剂和acromobacter.protease I作为催化剂,高效地从猪胰岛素制备人胰岛素。 构成:在赖氨酰内肽酶(Acromobacter。)存在下,使猪胰岛素与具有被取代或未取代的烷基或芳烷基保护的羧基的苏氨酸在水中或含有少量可与水混溶的有机溶剂的水溶液中反应。 蛋白酶I)在0-50℃和4-10pH,优选在接近中性条件下产生,以实现肽交换并获得在B30具有羧基保护的苏氨酸的人胰岛素衍生物。