PNP belongs to the PNP/MTAP phosphorylase family of proteins. This protein catalyzes the reversible phosphorolysis of ribonucleosides and 2’-deoxyribonucleosides with specificity for guanine, hypoxanthine and their analogs. PNP deficiency is a rare autosomal recessive genetic disease associated with a severe defect in T-lymphocyte function and neurologic disorder in children, comprising four percent of combined immunodeficiency cases.
Recombinant protein corresponding to aa1-289 of human PNP protein, fused to His-tag at N-terminus, expressed in E.coli.
Molecular Weight: 34.2kD (309aa) confirmed by MALDI-TOF
Enzyme Activity:Specific activity is > 120 units/mg, and is defined as the amount of enzyme that phosphorolysis of 1.0 umole of inosine with inorganic phosphate per minute at pH 7.5 at 25°C.
Storage and Stability:May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
仕様
Size：100ug
Source Antigen：Recombinant, E.coli
Grade：Affinity Purified
Purity：~90% (SDS-PAGE).
Form：Supplied as a liquid in 20mM Tris-HCl, pH 8.0, 0.1M sodium chloride, 2mM DTT, 10% glycerol.
