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    • 59. 发明公开
    • Method of stabilizing trypsin
    • Verfahren zur Stabilisierung von胰蛋白酶
    • EP0926235A2
    • 1999-06-30
    • EP98309920.1
    • 1998-12-03
    • Kyoto Daiichi Kagaku Co., Ltd.
    • Yonehara, Satoshi
    • C12N9/96C12N9/76C12Q1/37
    • C12N9/6427C12N9/96
    • The present invention provides a method for stabilizing trypsin, in which enzyme reaction of trypsin can be generated in a two-solution system, degradation of trypsin and its substrate can be prevented, and enzymatic activity of trypsin is improved compared to conventional methods, and which can be sufficiently applied to an automatic analyzer. An enzyme solution is prepared by dissolving trypsin in a buffer solution having a pH at which enzymatic activity of trypsin is active and containing calcium and/or manganese ions. It is preferable that the total concentration of the calcium ions and the manganese ions in the buffer solution is in the range of 3 to 10 mmol/l. It is also preferable that the concentration of the buffer solution is at least 10 mmol/l, and that the pKa of the buffer solution is higher than the pH of the buffer solution.
    • 本发明提供了一种稳定胰蛋白酶的方法,其中可以在双溶液体系中产生胰蛋白酶的酶反应,可以防止胰蛋白酶及其底物的降解,与常规方法相比,胰蛋白酶的酶活性提高, 可以充分地应用于自动分析仪。 通过将胰蛋白酶溶解在具有胰蛋白酶的酶活性并含有钙离子和/或锰离子的pH的缓冲溶液中来制备酶溶液。 缓冲溶液中的钙离子和锰离子的总浓度优选为3〜10mmol / l。 还优选缓冲溶液的浓度为至少10mmol / l,缓冲溶液的pKa高于缓冲溶液的pH。