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应用
Creatinine Deiminase microbial has been used:
- to immobilize aminosilylated glass beads based biosensor for ammonia/ammonium and creatinine detection in urine
- in creating creatinine-sensing membrane for biophysical studies
- to investigate the bioelectronic tongue for the simultaneous determination of urea, creatinine and alkaline ions in clinical samples
Creatinine deiminase has been used in a study to assess the application of a creatinine-sensitive biosensor for hemodialysis control. Creatinine deiminase has also been used in a study to investigate the bioelectronic tongue for the simultaneous determination of urea, creatinine and alkaline ions in clinical samples.
生化/生理作用
Creatinine deiminase catalyzes the hydrolysis of creatinine to methylhydantoine and ammonia.
物理属性
Isoelectric point : 4.4
Michaelis constant : 3.5 x 10‾3M (Creatinine)
Structure : 6 subunits per mol of enzyme
Inhibitors : Ag+,Hg++, o-phenanthroline,monoiodoacetate
Optimum pH : 8.5 – 9.5
Optimum temperature : 65 – 75°C
pH Stability : pH 7.0 – 11.0 (30°C, 20hr)
Thermal stability : Below 65°C (pH 7.5, 1hr)
Michaelis constant : 3.5 x 10‾3M (Creatinine)
Structure : 6 subunits per mol of enzyme
Inhibitors : Ag+,Hg++, o-phenanthroline,monoiodoacetate
Optimum pH : 8.5 – 9.5
Optimum temperature : 65 – 75°C
pH Stability : pH 7.0 – 11.0 (30°C, 20hr)
Thermal stability : Below 65°C (pH 7.5, 1hr)
单位定义
One unit will hydrolyze 1.0 μmole of creatinine to N-methylhydantoin and NH3 per min at pH 7.5 at 37 °C in a coupled system with L-glutamic dehydrogenase.
外形
Lyophilized powder containing mannitol as stabilizer
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
新产品
C M Huang et al.
Clinical chemistry, 34(1), 59-62 (1988-01-01)
We developed an enzymatic method for determination of 5-fluorocytosine in serum, using creatine iminohydrolase (EC 3.5.4.21), the Cobas-Bio analyzer, and an extant ammonia method. Analytical recovery (y) of drug added to serum (x) was good, with y = 0.97x-0.7, Sy.x
Anne K Bendt et al.
Archives of microbiology, 181(6), 443-450 (2004-05-19)
In order to utilize different nitrogen sources and to survive situations of nitrogen limitation, microorganisms have developed several mechanisms to adapt their metabolism to changes in the nitrogen supply. In this communication, the use of creatinine as an alternative nitrogen
Z K He et al.
Analytical biochemistry, 283(2), 166-174 (2000-07-25)
A precise and sensitive working microflow titration procedure was developed to determine creatinine and ammonia in urine samples. This procedure is based on enzymatic conversion of creatinine, gas diffusional membrane separation of the released ammonia into an acid acceptor stream
Manuel Gutiérrez et al.
Biosensors & bioelectronics, 23(6), 795-802 (2007-10-13)
Urea and creatinine biosensors based on urease and creatinine deiminase, respectively, covalently immobilized onto ammonium selective electrodes, were included in an array together with sensors sensitive to ammonium, potassium and sodium. Generic sensors to alkaline ions were also included. All
Hong Dinh Duong et al.
Sensors (Basel, Switzerland), 17(11) (2017-11-09)
In this study, the oxazine 170 perchlorate (O17)-ethylcellulose (EC) membrane was successfully exploited for the fabrication of creatine- and creatinine-sensing membranes. The sensing membrane exhibited a double layer of O17-EC membrane and a layer of enzyme(s) entrapped in the EC
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