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L-Lactate dehydrogenase

L-Lactate dehydrogenase from Pig heart L-Lactate + NAD+ ---> Pyruvate + NADH + H+ L-Lactate + NAD+ <--- Pyruvate + NADH + H+ This enzyme is used for enzymatic determination of numerous metabolites, e.g.ATP, ADP, glucose, creatinine, pyruvate, lactate and glycerol, and of enzyme activities, e.g.GPT, PK and CPK when coupled with the related enzymes.

Descrição do Produto:

Product name: (S)-Lactate: NAD+ oxidoreductase
Appearance: Crystalline suspension in 1.6M ammonium sulfate solution
Activity: GradeⅡ350U/mg-protein or more
Contaminants: Malate dehydrogenase ≤ 2.0×10-2%
Myokinase ≤ 1.0×10-2%
Pyruvate kinase ≤ 2.0×10-3%
Stability: Stable at 5℃ for at least one year
Molecular weight: 115,000±6,500
Michaelis constants: 2.5×10-2M (Lactate), 1.0×10-2M (Pyruvate)
Structure: 4 subunits per mol of enzyme, E1%1cm at 280 nm=11.52 (Biuret method)
Inhibitors: I-, Ag+, Hg2+, p-chloromercuribenzoate, LDH inhibitors (formed from NADH)
Optimum pH: 6.0-7.4
Optimum temperature: above 60℃
pH Stability: pH 6.0-8.0(23℃, 22hr)
Thermal stability: below 50℃(pH 7.4, 10min)
EC #


Used in In Vitro Diagnostic tests and Life Sciences, Research & Development



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L-Lactate dehydrogenase