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Gyrase

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==Function==
==Function==
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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. <ref>PMID:16397501</ref> See also [[Isomerases]].
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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<StructureSection load='2pm4' size='350' side='right' caption='Human α-defensin 1 (PDB entry [[2pm4]])' scene='50/509378/Cv/4'>. 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. <ref>PMID:15673717</ref> See also [[Isomerases]].
==Relevance==
==Relevance==

Revision as of 07:46, 20 March 2016

Gyrase subunit A N-terminal (yellow) and subunit B C-terminal (green) complex with DNA (magenta, cyan), inhibitor, sulfate and Mn+2 ion (purple) (PDB entry 4plb)

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