abstract |
The present invention provides a creatinine amide hydrolase that overcomes the disadvantages of known creatinine amide hydrolase, has a further improved affinity for creatinine, that is, has a reduced Km value for creatinine, and is adapted to an automatic analyzer and is accurate. To provide a reagent composition for measuring creatinine that is excellent in properties, precision and economy. A modified creatinine amide hydrolase having improved affinity with a substrate compared to before modification, or a creatinine amide hydrolase modified, creatine amidinohydrolase, sarcosine oxidase, and a reagent for detecting hydrogen peroxide Containing creatinine measurement reagent. [Selection figure] None |