GyrB

• Description: B subunit of DNA gyrase
  
  

Gene name	gyrB
Synonyms	novA
Essential
Product	DNA gyrase (subunit B) (EC 5.99.1.3)
Function	initation of replication cycle and DNA elongation
MW, pI	71 kDa, 5.378
Gene length, protein length	1914 bp, 638 aa
Immediate neighbours
Gene sequence (+200bp)	Protein sequence
Genetic context

The gene

Basic information

• Coordinates:

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• Paralogous protein(s): grlB

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions: GyrA-GyrB

• Localization: nucleoid-associated in actively growing cells PubMed

Database entries

• Structure:

• Swiss prot entry:

• KEGG entry:

• E.C. number:

Expression and regulation

• Operon: yaaA-recF-yaaB-gyrB PubMed

• Sigma factor: SigA PubMed

• Regulation:

• Regulatory mechanism:

• Additional information: GyrB is subject to Clp-dependent proteolysis upon glucose starvation PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

1. Huang et al. (1998) Bipolar localization of Bacillus subtilis topoisomerase IV, an enzyme required for chromosome segregation. Proc. Natl. Acad. Sci. USA 95: 4652-4657. PubMed
2. Gerth et al. (2008) Clp-dependent proteolysis down-regulates central metabolic pathways in glucose-starved Bacillus subtilis. J Bacteriol 190:321-331 PubMed
3. Ogasawara et al. (1985) Structure and function of the region of the replication origin of the Bacillus subtilis chromosome. IV. Transcription of the oriC region and expression of DNA gyrase genes and other open reading frames.Nucl. Acids Res. 11: 2267-2279. PubMed