Special Issue "DNA Topoisomerases in Genome Maintenance in Bacteria"

A special issue of Biology (ISSN 2079-7737). This special issue belongs to the section "Genetics and Genomics".

Deadline for manuscript submissions: 31 July 2021.

Special Issue Editor

Prof. Marc Drolet
E-Mail Website
Guest Editor
Département de microbiologie, infectiologie et immunologie, Université de Montréal, Canda
Interests: biology of R-loops and topoisomerases in bacteria

Special Issue Information

Dear Colleagues,

DNA topoisomerases are essential and ubiquitous nicking-closing enzymes, with strand-passage activity that solves the topological problems inherent to the double helical structure of the DNA. Indeed, underwinding, overwinding, knotting or tangling occur every time the DNA is transcribed, replicated or repaired. Without the efficient action of topoisomerases, topological problems may inhibit the progression and completion of DNA transactions and seriously threaten the stability of the genome. Their importance in genome maintenance is illustrated by the fact that topoisomerase malfunction may lead to various diseases, including cancer.

How defects in topoisomerase activity may threaten genome integrity is still largely unknown, especially in bacteria, where phenotypes related to topoisomerase gene mutations have been mostly studied and interpreted in the context of supercoiling regulation and its effect on gene expression. Topoisomerases may directly participate in genome maintenance, for example, by acting at the first and last steps of homologous recombination or by performing decatenation to allow chromosome segregation. They may also indirectly affect genome stability via modulation of supercoiling that regulates replication initiation, chromosome segregation and the formation of R-loops during transcription that may block the progression of replication forks or be used as origins of replication. The action of topoisomerases during replication elongation and termination as well as their effects on mutagenesis may also affect genome stability. There is also evidence that topoisomerases may modulate the ability of bacteria to acquire resistance to antibiotics.

This Special Issue welcomes the submission of original research and review manuscripts focusing on direct as well as indirect effects of topoisomerase activity on replication, recombination, mutagenesis, and chromosome segregation in bacteria, mostly in the context of genome maintenance.

Prof. Marc Drolet
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Biology is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • DNA topoisomerases
  • DNA supercoiling
  • DNA topology
  • DNA replication
  • Chromosome segregation
  • Genome maintenance

Published Papers

This special issue is now open for submission.
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