Apparent suicidal inactivation of DNA polymerase by adenosine 2',3'-riboepoxide 5'-triphosphate.


Adenosine 2',3'-riboepoxide 5'-triphosphate (epoxyATP) has been found to be a suicidal inactivator of DNA polymerase I from Escherichia coli by the following criteria. Inactivation is complete, is first order in enzyme activity, and shows saturation kinetics with an apparent KD of 30 +/- 10 micron for epoxy ATP. This KD is comparable to the KM of the… (More)


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