DNA gyrase subunit B

UniProtKB accession:  P0C559

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Supercoils relaxed DNA in an ATP-dependent manner (PubMed:8574396). A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state, also catalyzes the interconversion of other topological isomers of double-stranded DNA rings, including catenanes (PubMed:12000834). At comparable concentrations has a stronger decatenation activity than E.coli, which is inhibited by ciprofloxacin and novobiocin (PubMed:12000834). Cleaves dsDNA at the sequence 5'-AT/GGCC-3', leaving a 4 base overhang (PubMed:12000834). Relaxes negatively supercoiled DNA in an ATP-independent manner (PubMed:12000834).