Description_x000D_ Packaging_x000D_ 25 units in glass bottle_x000D_ Application_x000D_ This enzyme is useful for enzymatic determination of N-acetylneuraminic acid and sialic acid when_x000D_ coupled with the related enzymes in clinical analysis._x000D_ For industrial use, this enzyme is useful for enzymatic synthesis of sialic acid._x000D_ Used in the Sialic Acid Quantification Kit, SIALIC-Q_x000D_ Physical properties_x000D_ Isoelectric point: 4.6 ± 0.1_x000D_ Michaelis constant: 2.5 x 10‾3M (N-Acetylneuraminic acid)_x000D_ Structure: 3 subunits (approx. 35,000) per mol of enzyme_x000D_ Inhibitors: p-Chloromercuribenzoate, sodium dodecyl sulfact, Hg++, Ag+_x000D_ Optimum pH: 7.5– 8.0_x000D_ Optimum temp: 70°C_x000D_ pH Stability: pH 6.0–9.0 (10°C, 25hr)_x000D_ Thermal stability: Below 65°C (pH 7.5, 30 min)_x000D_ Unit Definition_x000D_ One unit will release 1.0 μmole of pyruvate from NANA per min at pH 7.7 at 37 °C._x000D_ Physical form_x000D_ Lyophilized powder containing mannitol and EDTA