Inactivation of DNA polymerase by adenosine 2',3'-riboepoxide 5'-triphosphate allows estimation of the primers affinity.

Abstract:

Template-primer dependent inactivation of human DNA polymerase alpha and Klenow fragment of E. coli DNA polymerase I by adenosine 2',3'-riboepoxide 5'-triphosphate was used for quantitative analysis of the Kd values for oligonucleotide primers of different length. The Kd values are smaller by a factor of 2.5 than the Km values for the same primers determined in the reaction of DNA polymerization in the case of DNA polymerase alpha. The Kd and Km values are nearly the same for Klenow fragment. Such approach to the determination of Km/Kd ratio can likely be used for detailed quantitative analysis of DNA polymerases.

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