Name Purine-nucleoside: orthophosphate ribosyltransferase
EC 2.4.2.1
Appearance White amorphous powder lyophilized
Activity Grade III, 15 U/mg-solid or more
Contaminants Catalase ≤ 20%
5′-Nucleosidase ≤ 1.0×10-3 %
Adenosine deaminase ≤ 1.0×10-3 %
ATPase ≤ 1.0×10-2 %
Stabilizers K-Gluconate, mannitol, EDTA
Stability Stable at – 20℃ for at least 12 months
Molecular weight Approx. 120,000
Isoelectric point 4.1±0.1
Michaelis constants 6.4×10-5 M (Inosine), 3.2×10-4 M (Pi)
Inhibitors p-Chloromercuribenzoate, SDS, Hg2+, Ag+
Optimum pH 7.5-8.0
Optimum temperature 65℃
pH Stability pH 6.0-9.0 (30℃, 16hr)
Thermal stability Below 60℃ (pH 7.7, 30min)
Used in In Vitro Diagnostic tests and Life Sciences, Research & Development
< -20ºC
WhatsApp us