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Topoisomerases of kinetoplastid parasites: Why so fascinating?

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Title Topoisomerases of kinetoplastid parasites: Why so fascinating?
 
Creator Das, BB
Sengupta, T
Ganguly, A
Majumder, HK
 
Subject Biochemistry & Molecular Biology; Microbiology
 
Description DNA topoisomerases are the key enzymes involved in carrying out high precision DNA transactions inside the cells. However, they are detrimental to the cell when a wide variety of topoisomerase-targeted drugs generate cytotoxic lesions by trapping the enzymes in covalent complexes on the DNA. The discovery of unusual heterodimeric topoisomerase I in kinetoplastid family added a new twist in topoisomerase research related to evolution, functional conservation and their preferential sensitivity to Camptothecin. On the other hand, structural and mechanistic studies on kinetoplastid topoisomerase II delineate some distinguishing features that differentiate the parasitic enzyme from its prokaryotic and eukaryotic counterparts. This review summarizes the recent advances in research in kinetoplastid topoisomerases, their evolutionary significance and the death of the unicellular parasite Leishmania donovani induced by topoisomerase I inhibitor camptothecin.
 
Publisher BLACKWELL PUBLISHINGOXFORD9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND
 
Date 2011-09-20T12:12:04Z
2011-09-20T12:12:04Z
2006
 
Type Review
 
Identifier MOLECULAR MICROBIOLOGY
0950-382X
http://hdl.handle.net/123456789/14111
 
Language English