Abstract
A modification of the procedure reported byJohnson andWalseth 1 for the preparation of (α-32P)ATP:(γ-32P)GTP with a specific activity of more than 5000 Ci/mmol was made firstly, then it was used as the phosphate donor in the reaction catalyzed by the polynucleotide kinase, to transfer its radioactive phosphate to the 5′-position of the 3′-AMP, resulting (5′-32P)3′-ADP. After that, (5′-32P)3′-ADP was hydrolysed to (5′-32P)AMP under the catalysis of Nuclease P1, the late was then phosphorylated to produce (α-32P)ATP by the action of myokinase and pyruvate kinase. By this method, we firstly prepared (α-32P)ATP with a specific activity of more than 4000 Ci/mmol which was measured by HPLC analysis.
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Wu, F., Wang, Y. & Yi, M. A modification to an enzymatic method for the preparation of (α-32P) ATP with a high specific activity. J Radioanal Nucl Chem 218, 41–43 (1997). https://doi.org/10.1007/BF02033971
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DOI: https://doi.org/10.1007/BF02033971