DNA gyrase subunit B
Also known as: SP_0806, gyrB
Function
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. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner.
Classification
- Family (Pfam)
- PF00204 DNA_gyraseB, PF00986 DNA_gyraseB_C, PF02518 HATPase_c, PF01751 Toprim
- InterPro
- DNA_gyrase_B_C, GyrB, HATPase_C_sf, HATPase_dom, Ribosomal_Su5_D2-typ_SF, Ribsml_uS5_D2-typ_fold_subgr, Topo_IIA, Topo_IIA-like_dom_sf, Topo_IIA_B, Topo_IIA_B_C, Topo_IIA_bsu_dom2, TopoIIA_CS, TOPRIM_dom, TOPRIM_GyrB
- Functional cluster
- S-Adenosylmethionine Synthases & related
Gene Ontology · 9
Drugs targeting this protein · 4
- GREPAFLOXACIN HYDROCHLORIDE inhibitor
- GEMIFLOXACIN MESYLATE inhibitor
- GATIFLOXACIN inhibitor
- LEVOFLOXACIN inhibitor
Related proteins · sequence + function similarity
- DNA gyrase subunit B 0.98
- DNA gyrase subunit B 0.98
- DNA gyrase subunit B 0.97
- DNA gyrase subunit B 0.97
- DNA gyrase subunit B 0.97
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
- DNA gyrase subunit B 0.96
Literature · 2 cited papers
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