DNA Topoisomerases of Kinetoplastid Parasites: Brief Overview and Recent Perspectives.

Sourav Saha,S. Chowdhury,H. Majumder

Published 2019 in Current Issues in Molecular Biology

ABSTRACT

Topoisomerases are a group of enzymes that resolve DNA topological problems and aid in different DNA transaction processes viz. replication, transcription, recombination, etc. inside cells. These proteins accomplish their feats by steps of DNA strand(s) scission, strand passage or rotation and subsequent rejoining activities. Topoisomerases of kinetoplastid parasites have been extensively studied because of their unusual features. The unique presence of heterodimeric Type IB topoisomerase and prokaryotic 'TopA homologue' Type IA topoisomerase in kinetoplastids still generates immense interest among scientists. Moreover, because of their structural dissimilarity with the host enzymes, topoisomerases of kinetoplastid parasites are attractive targets for chemotherapeutic interventions to kill these deadly parasites. In this review, we summarize historical perspectives and recent advances in kinetoplastid topoisomerase research and how these proteins are exploited for drug targeting.

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