Fnr

• Description: transcriptional regulator of anaerobic genes
  
  

Gene name	fnr
Synonyms
Essential	no
Product	transcription regulator (Crp family)
Function	regulation of anaerobiosis, fermentation and overflow metabolism
Metabolic function and regulation of this protein in SubtiPathways: Alternative nitrogen sources
MW, pI	27 kDa, 5.989
Gene length, protein length	714 bp, 238 aa
Immediate neighbours	ywiC, narK
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

regulators of electron transport, transcription factors and their control

This gene is a member of the following regulons

Fnr regulon, NsrR regulon, ResD regulon

The gene

Basic information

• Locus tag: BSU37310

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity: contains an iron-sulfur cluster

• Interactions:

• Localization: cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: P46908

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon:
  • narK-fnr PubMed
  • fnr PubMed

• Sigma factor:
  • narK: SigA PubMed
  • fnr: SigA PubMed

• Regulation:
  • narK: expressed under anaerobic conditions (Fnr) PubMed
  • fnr: expressed under anaerobic conditions (ResD) PubMed
  • induced by nitric oxide under anaerobic conditions (NsrR) PubMed

• Regulatory mechanism:
  • ResD: transcription activation PubMed
  • NsrR: transcription repression PubMed
  • Fnr: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: