Storage Buffer: 20mM Tris-HCl (pH 7.5 at 25°C), 0.2M NaCl, 0.1mM EDTA, 1mM DTT, 0.01% Nonidet? P-40 and 50% glycerol.
Source: Recombinant E. coli strain.
QC Tests: Activity, SDS-PAGE/purity, DNase, RNase, endonuclease, first-strand cDNA synthesis.
Unit Definition: One unit is the amount of enzyme required to incorporate 1nmol of deoxynucleotide into acid-precipitable material in 10 minutes at 37°C. The reaction conditions are: 50mM Tris-HCl (pH 8.3 at 25°C), 7mM MgCl2, 40mM KCl, 10mM DTT, 0.1mg/ml BSA, 0.5mM [3H]dTTP, 0.025mM oligo(dT), 0.25mM poly(A) and 0.01% NP-40.