Appearance: Yellowish amorphous powder lyophilized
Activity: Grade Ⅲ10U/mg-solid or more (containing approx. 20% of
stabilizers)
Stabilizers: EDTA, BSA ,amino acids, (glycinesodium glutamate etc.)
Stability: Stable at – 20℃ for at least 6 months
Molecular weight: approx. 95,000
Isoelectric point: 4.1±0.1
Michaelis constants: 2.84×10-3 M (Choline), 5.33×10-3M(Betaine aldehyde)
Structure: One mol of FAD is covalently bound to mol of the enzyme）
Inhibitors: p-Chloromercuribenzoate, Cu-2+ Co2+, Hg2+, Ag+
Optimum pH: 8.0－8.5
Optimum temperature: 40－45℃
pH Stability: pH 7.0－9.0 (30℃, 2 hr)
Thermal stability: below 37℃ (pH 7.5, 10min)