Gyrase

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Gyrase (Gyr) is a type of topoisomerase II in prokaryotes which unwinds double stranded DNA. The DNA Gyr cutting allows the formation of a negative DNA supercoil which enables replication of DNA. Gyr consists of 2 subunits: GyrA and GyrB. Reverse gyrase (Top-RG) is a type of topoisomerase I which catalyses the formation of positive DNA supercoil. [1]

3D Structure of Gyrase

Updated on 27-November-2014

Additional Resources

For additional information, see: Bacterial Infections

References

  1. ↑ Gore J, Bryant Z, Stone MD, Nollmann M, Cozzarelli NR, Bustamante C. Mechanochemical analysis of DNA gyrase using rotor bead tracking. Nature. 2006 Jan 5;439(7072):100-4. PMID:16397501 doi:10.1038/nature04319

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Michal Harel, Alexander Berchansky, David Canner, Joel L. Sussman

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