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表单
lyophilized powder
质量水平
比活
100-300 units/mg protein
分子量
~175 kDa
组成
Protein, 65-85%
异质活性
Creatinase and urease ≤1%
Hexokinase and ATPase ≤0.1%
储存温度
2-8°C
应用
在临床分析中,该酶可与肌酸酶、肌氨酸脱氢酶或肌氨酸氧化酶以及甲醛脱氢酶结合用于酶法测定肌酐。
来自微生物的肌酐酶可通过与其他酶共固定进行肌酐测定而用于安培生物传感器的制备。
生化/生理作用
来自假单胞菌属的肌酐酶是一种每个亚基分子量为28.4 kDa的同六聚体酶。它是一种环状酰胺水解酶,可催化肌酸酐向肌酸的可逆性转化。每个单体在β-链的C末端和主要α-螺旋的N末端附近都含有一个双核锌中心。这些锌离子指示着活性位点的位置。
物理属性
等电点: 4.7
米氏常数:3.2 x 10‾2M(肌苷),5.7 x 10‾2M(肌酸)
结构:每摩尔的酶6个亚基(每个亚基结合一摩尔的锌)
抑制剂:Ag+、Hg++、N-溴代琥珀酰亚胺、EDTA
最适pH值: 6.5 − 7.5
最适温度: 70°C
pH稳定性: pH 7.5 − 9.0 (5°C,16小时)
热稳定性: 低于70°C(pH 7.5,30分钟)
米氏常数:3.2 x 10‾2M(肌苷),5.7 x 10‾2M(肌酸)
结构:每摩尔的酶6个亚基(每个亚基结合一摩尔的锌)
抑制剂:Ag+、Hg++、N-溴代琥珀酰亚胺、EDTA
最适pH值: 6.5 − 7.5
最适温度: 70°C
pH稳定性: pH 7.5 − 9.0 (5°C,16小时)
热稳定性: 低于70°C(pH 7.5,30分钟)
单位定义
在pH 8.0、25 °C条件下,一个单位将在每分钟内水解1.0 μmole的肌苷
外形
含有蔗糖和BSA作为稳定剂的冻干粉末
分析说明
通过缩二脲法测定的蛋白质。
警示用语:
Danger
危险声明
预防措施声明
危险分类
Resp. Sens. 1
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
法规信息
常规特殊物品
含少量动物源组分生物产品
历史批次信息供参考:
分析证书(COA)
Lot/Batch Number
Hariprasad Trivedi et al.
Postgraduate medicine, 121(5), 166-170 (2009-10-13)
The nephrotoxicity of gadolinium-based magnetic resonance contrast media has not been adequately studied. We evaluated the nephrotoxicity of gadolinium-based contrast media in hospitalized patients who underwent magnetic resonance imaging (MRI) as part of routine clinical care. Subjects who had a
V D Luk''ianchuk et al.
Eksperimental'naia i klinicheskaia farmakologiia, 69(4), 51-56 (2006-09-26)
The influence of lipoic acid on the energy homeostasis in rats with chronic generalized parodontitis has been investigated. Lipoic acid possesses the energy-saving activity, which is related to an increase in oxidative phosphorylation efficiency.
Won K Han et al.
Clinical journal of the American Society of Nephrology : CJASN, 4(5), 873-882 (2009-05-02)
Serum creatinine (Scr) does not allow for early diagnosis of acute kidney injury (AKI). The diagnostic utility of urinary kidney injury molecule-1 (KIM-1), N-acetyl-beta-D-glucosaminidase (NAG), and neutrophil gelatinase associated lipocalin (NGAL) was evaluated for the early detection of postoperative AKI
Barbara Beuth et al.
Journal of molecular biology, 332(1), 287-301 (2003-08-30)
Creatinine amidohydrolase (creatininase; EC 3.5.2.10) from Pseudomonas putida, a homohexameric enzyme with a molecular mass of 28.4 kDa per subunit, is a cyclic amidohydrolase catalysing the reversible conversion of creatinine to creatine. The enzyme plays a key role in the
Chronic kidney disease: Automated eGFR reporting: good for the patient?
Andrew D Rule et al.
Nature reviews. Nephrology, 5(12), 673-675 (2009-11-26)
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