NarK

• Description: nitrite extrusion protein
  
  

Gene name	narK
Synonyms
Essential	no
Product	nitrite extrusion protein
Function	nitrate respiration, nitrite export
MW, pI	42 kDa, 10.099
Gene length, protein length	1185 bp, 395 aa
Immediate neighbours	fnr, argS
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU37320

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• Paralogous protein(s): NasA

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: cell membrane (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: P46907

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: narK-fnr PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • narK: expressed under anaerobic conditions (Fnr) PubMed
  • repressed unless NO is present under anaerobic conditions (NsrR) PubMed

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

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: