Function of the hydrophilic carboxyl terminus of type II DNA topoisomerase from Drosophila melanogaster. I. In vitro studies.

Abstract excerpt

The function of the hydrophilic carboxyl-terminal region of Drosophila DNA topoisomerase II was examined by constructing a series of deletion mutants at the 3'-end of the Drosophila Top2 cDNA. The truncated enzymes were then expressed in Saccharomyces cerevisiae. Deletion of up to 240 out of 1447 total amino acids had no apparent effect on the enzyme's ability to catalyze topisomerization reactions. When 273, or...

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