Structural highlights
6j90 is a 1 chain structure with sequence from "bacillus_typhi"_schroeter_1886 "bacillus typhi" schroeter 1886. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , , |
| Gene: | gyrB, STY3943, t3684 ("Bacillus typhi" Schroeter 1886) |
| Activity: | DNA topoisomerase (ATP-hydrolyzing), with EC number 5.99.1.3 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[GYRB_SALTI] 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.[HAMAP-Rule:MF_01898]
