NasE

• Description: assimilatory nitrite reductase (subunit)
  
  

Gene name	nasE
Synonyms	nasBD, nirD
Essential	no
Product	assimilatory nitrite reductase (subunit)
Function	utilization of nitrite as nitrogen source
MW, pI	11 kDa, 4.805
Gene length, protein length	318 bp, 106 aa
Immediate neighbours	nasF, nasD
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: BSU03290

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Ammonium hydroxide + 3 NAD(P)⁺ + H₂O = nitrite + 3 NAD(P)H (according to Swiss-Prot)

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• Swiss prot entry: P42436

• KEGG entry: [3]

• E.C. number: 1.7.1.4

Expression and regulation

• Operon:

• Sigma factor:

• Regulation:
  • expressed in the absence of good nitrogen sources (glutamine or ammonium) (TnrA) PubMed
  • expressed under anaerobic conditions (ResD) PubMed
  • repressed unless NO is present under anaerobic conditions (NsrR) PubMed

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

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Michiko M Nakano, Hao Geng, Shunji Nakano, Kazuo Kobayashi
The nitric oxide-responsive regulator NsrR controls ResDE-dependent gene expression.
J Bacteriol: 2006, 188(16);5878-87
[PubMed:16885456] [WorldCat.org] [DOI] (P p)

M M Nakano, Y Zhu, M Lacelle, X Zhang, F M Hulett
Interaction of ResD with regulatory regions of anaerobically induced genes in Bacillus subtilis.
Mol Microbiol: 2000, 37(5);1198-207
[PubMed:10972836] [WorldCat.org] [DOI] (P p)

M M Nakano, T Hoffmann, Y Zhu, D Jahn
Nitrogen and oxygen regulation of Bacillus subtilis nasDEF encoding NADH-dependent nitrite reductase by TnrA and ResDE.
J Bacteriol: 1998, 180(20);5344-50
[PubMed:9765565] [WorldCat.org] [DOI] (P p)

L V Wray, A E Ferson, K Rohrer, S H Fisher
TnrA, a transcription factor required for global nitrogen regulation in Bacillus subtilis.
Proc Natl Acad Sci U S A: 1996, 93(17);8841-5
[PubMed:8799114] [WorldCat.org] [DOI] (P p)

1. Author1, Author2 & Author3 (year) Title Journal volume: page-page. PubMed