DNA polymerases from a parasitic protozoa Leishmania donovani UR6: evidence of presence of a novel kind of DNA polymerase.


DNA polymerases of Leishmania donovani have been isolated and ...
DNA polymerases of Leishmania donovani have been isolated and purified. The cell extract has been chromatographed on a phosphocellulose column that separated into three peaks. The activity peak 1 was further purified to homogeneity. The DNA polymerase is a 64 KDa polypeptide, resistant to N-ethylmaleimide and aphidicolin. It requires MnCl2 and a high concentration of KCl (0.5 M) for maximal activity. It has both 3' to 5' and 5' to 3' exonuclease activities that reside in the same polypeptide.




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