C3172
Kreatininase aus Pseudomonas sp.
lyophilized powder, 100-300 units/mg protein
Synonym(e):
Creatinin-Amidohydrolase
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About This Item
Empfohlene Produkte
Form
lyophilized powder
Spezifische Aktivität
100-300 units/mg protein
Mol-Gew.
~175 kDa
Zusammensetzung
Protein, 65-85%
Fremdaktivität
Creatinase and urease ≤1%
Hexokinase and ATPase ≤0.1%
Lagertemp.
2-8°C
Anwendung
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.
Biochem./physiol. Wirkung
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.
Physikalische Eigenschaften
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)
Einheitendefinition
1 U hydrolysiert 1.0 μmol Creatinin zu Creatin pro Minute bei pH 8.0 und 25 °C
Physikalische Form
Lyophilisiertes Pulver, enthält Saccharose. ~70% des Proteins ist Rinderserumalbumin.
Hinweis zur Analyse
Proteingehalt mittels Biuret-Reaktion bestimmt.
Signalwort
Danger
H-Sätze
P-Sätze
Gefahreneinstufungen
Resp. Sens. 1
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
Analysenzertifikate (COA)
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