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ACTIVITY TEST
Buffer Formulation 20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 0.01% SKL, 5% Trehalose and Proclin300. Traits Freeze-dried powder Purity > 97% Isoelectric Point 7.1 Applications Cell culture; Activity Assays.
Glutathione S-transferase P (GSTP1) is a member of Glutathione S-transferases (GSTs) family which play an important role in detoxification by catalyzing the conjugation of many hydrophobic and electrophilic compounds with reduced glutathione. GSTP1 catalyze the endogenous glutathione conjugation 1-Chloro-2,4-dinitrobenzene (CDNB), which can increase in the absorbance at 340nm. The reaction was performed in adding 10μL 200mM glutathione (reduced) and 10μL 100mM CDNB in 980μL 100mM NaH2PO4 (pH7.0), rapidly mixed. Then add 50μL mixed substrates to 50μL recombinant rat GSTP1, mix gentliy, read the absorbance at 340nm for 5min. One unit activity was defined as 1 μmole of CDNB conjugate per minute per 1 mg GSTP1
USAGE
Reconstitute in 20mM Tris, 150mM NaCl (pH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.
STORAGE
Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.
STABILITY
The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.
Image
Figure. SDS-PAGE
Figure. Western Blot
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