Functional and regulatory characteristics of eukaryotic type II DNA topoisomerase

Bakshi, Rahul P. ; Galande, Sanjeev ; Muniyappa, K. (2001) Functional and regulatory characteristics of eukaryotic type II DNA topoisomerase Critical Reviews in Biochemistry & Molecular Biology, 36 (1). pp. 1-37. ISSN 1040-9238

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DNA topoisomerases are ubiquitous nuclear enzymes that govern the topo-logical interconversions of DNA by transiently breaking/rejoining the phosphodiester backbone of one (type I) or both (type II) strands of the double helix. Consistent with these functions, topoisomerases play key roles in many aspects of DNA metabolism. Type II DNA topoisomerase (topo II) is vital for various nuclear processes, including DNA replication, chromosome segregation, and maintenance of chromosome structure. Topo II expression is regulated at multiple stages, including transcriptional, posttranscriptional, and posttranslational levels, by a multitude of signaling factors. Topo II is also the cellular target for a variety of clinically relevant anti-tumor drugs. Despite significant progress in our understanding of the role of topo II in diverse nuclear processes, several important aspects of topo II function, expression, and regulation are poorly understood. We have focused this review specifically on eukaryotic DNA topoisomerase II, with an emphasis on functional and regulatory characteristics.

Item Type:Article
Source:Copyright of this article belongs to Informa Healthcare.
Keywords:DNA Supercoiling; Topoisomerases; Chromosome Segregation; Genome Integrity; Cancer; Anti-tumor Agents
ID Code:22539
Deposited On:24 Nov 2010 08:22
Last Modified:17 May 2016 06:34

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