C3172
Creatininase from microorganisms
lyophilized powder, 100-300 units/mg protein
Sinônimo(s):
Creatinine Amidohydrolase
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About This Item
Produtos recomendados
Formulário
lyophilized powder
Nível de qualidade
atividade específica
100-300 units/mg protein
peso molecular
~175 kDa
composição
Protein, 65-85%
atividade externa
Creatinase and urease ≤1%
Hexokinase and ATPase ≤0.1%
temperatura de armazenamento
2-8°C
Aplicação
Creatininase from microorganisms may be used in the preparation of amperometric biosensor by co-immobilization with other enzymes for the determination of creatinine.
This enzyme is useful for enzymatic determination of creatinine when coupled with creatine amidinohydrolase, sarcosine dehydrogenase or sarcosine oxidase and formaldehyde dehydrogenase in clinical analysis.
Ações bioquímicas/fisiológicas
Creatininase from Pseudomonas sp. is a homohexameric enzyme with a molecular mass of 28.4 kDa per subunit. It is a cyclic amidohydrolase catalysing the reversible conversion of creatinine to creatine. Each monomer contains a binuclear zinc centre near the C termini of the β-strands and the N termini of the main α-helices. These zinc ions indicate the location of the active site.
propriedades físicas
Isoelectric point:4.7
Michaelis constants:3.2 x 10‾2M (Creatinine), 5.7 x 10‾2M (Creatine)
Structure:6 subunits per mol of enzyme (One mol of zinc is bound to each subunit)
Inhibitors:Ag+, Hg++, N-bromosuccinimide, EDTA
Optimum pH:6.5 − 7.5
Optimum temp:70°C
pH Stability:pH 7.5 − 9.0 (5°C, 16hr)
Thermal stability:Below 70°C (pH 7.5, 30 min)
Michaelis constants:3.2 x 10‾2M (Creatinine), 5.7 x 10‾2M (Creatine)
Structure:6 subunits per mol of enzyme (One mol of zinc is bound to each subunit)
Inhibitors:Ag+, Hg++, N-bromosuccinimide, EDTA
Optimum pH:6.5 − 7.5
Optimum temp:70°C
pH Stability:pH 7.5 − 9.0 (5°C, 16hr)
Thermal stability:Below 70°C (pH 7.5, 30 min)
Definição da unidade
One unit will hydrolyze 1.0 μmole of creatinine to creatine per min at pH 8.0 and 25 °C
forma física
Lyophilized powder containing sucrose and BSA as stabilizers
Nota de análise
Protein determined by biuret.
Palavra indicadora
Danger
Frases de perigo
Declarações de precaução
Classificações de perigo
Resp. Sens. 1
Código de classe de armazenamento
11 - Combustible Solids
Classe de risco de água (WGK)
WGK 3
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Equipamento de proteção individual
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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Tadashi Yoshimoto et al.
Journal of molecular biology, 337(2), 399-416 (2004-03-09)
Creatininase from Pseudomonas putida is a member of the urease-related amidohydrolase superfamily. The crystal structure of the Mn-activated enzyme has been solved by the single isomorphous replacement method at 1.8A resolution. The structures of the native creatininase and the Mn-activated
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Jason A Berberich et al.
Acta biomaterialia, 1(2), 193-199 (2006-05-17)
We describe the development of an extended use amperometric three-enzyme creatinine biosensor and the successful chemical modification and immobilization of the enzyme creatinine amidohydrolase using polyurethane prepolymers. Creatinine amidohydrolase is significantly stabilized by immobilization in polyurethane polymers. The half-life increases
Anne-Annette P Raso et al.
International journal of rheumatic diseases, 12(3), 243-249 (2010-04-09)
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Protocolos
Assay Procedure for Creatininase
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