2961896:NK667 RS27290
gene id: 2961896:NK667_RS27290
uniprot id: D7RJY3
names: Cofactor
names: Function
names: Miscellaneous
names: Similarity
names: Subcellular Location Annotation
names: Subunit
messages: 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.
messages: Belongs to the type II topoisomerase GyrB family.
messages: Binds two Mg(2+) per subunit. The magnesium ions form salt bridges with both the protein and the DNA. Can also accept other divalent metal cations, such as Mn(2+) or Ca(2+).
messages: Cytoplasm
messages: Few gyrases are as efficient as E.coli at forming negative supercoils. Not all organisms have 2 type II topoisomerases; in organisms with a single type II topoisomerase this enzyme also has to decatenate newly replicated chromosomes.
messages: Heterotetramer, composed of two GyrA and two GyrB chains. In the heterotetramer, GyrA contains the active site tyrosine that forms a transient covalent intermediate with DNA, while GyrB binds cofactors and catalyzes ATP hydrolysis.

2961896:NK667 RS21255
gene id: 2961896:NK667_RS21255
uniprot id: D7RJY0
names: Function
names: Similarity
names: Subcellular Location Annotation
messages: Belongs to the RecA family.
messages: Can catalyze the hydrolysis of ATP in the presence of single-stranded DNA, the ATP-dependent uptake of single-stranded DNA by duplex DNA, and the ATP-dependent hybridization of homologous single-stranded DNAs. It interacts with LexA causing its activation and leading to its autocatalytic cleavage.
messages: Cytoplasm

2961896:NK667 RS30355
gene id: 2961896:NK667_RS30355
uniprot id: D7RJY1
names: Function
names: Similarity
names: Subcellular Location Annotation
names: Subunit
messages: Belongs to the sigma-70 factor family. RpoD/SigA subfamily.
messages: Cytoplasm
messages: Interacts transiently with the RNA polymerase catalytic core.
messages: Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the primary sigma factor during exponential growth.

2961896:NK667 RS26970
gene id: 2961896:NK667_RS26970
uniprot id: D7RJX9
names: Similarity
names: Subcellular Location Annotation
messages: Belongs to the thioredoxin family. DsbA subfamily.
messages: Periplasm