3N2S image
Deposition Date 2010-05-19
Release Date 2010-09-15
Last Version Date 2024-11-06
Entry Detail
PDB ID:
3N2S
Keywords:
OXIDOREDUCTASE
Title:
Structure of NfrA1 nitroreductase from B. subtilis
Biological Source:
Source Organism:
Bacillus subtilis (Taxon ID: 1423)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.95 Å
R-Value Free:
0.19
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 1
3N2S validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADPH-dependent nitro/flavin reductase
Gene (Uniprot):nfrA1
Chain IDs:A, B, C, D
Chain Length:249
Number of Molecules:4
Biological Source:Bacillus subtilis
UniProt ID:P39605 Pfam ID:PF00881
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
CL
FMN
Primary Citation
NADH oxidase activity of Bacillus subtilis nitroreductase NfrA1: insight into its biological role.
Febs Lett. 584 3916 3922 (2010)
PMID: 20727352 DOI: 10.1016/j.febslet.2010.08.019

Abstact

NfrA1 nitroreductase from the Gram-positive bacterium Bacillus subtilis is a member of the NAD(P)H/FMN oxidoreductase family. Here, we investigated the reactivity, the structure and kinetics of NfrA1, which could provide insight into the unclear biological role of this enzyme. We could show that NfrA1 possesses an NADH oxidase activity that leads to high concentrations of oxygen peroxide and an NAD(+) degrading activity leading to free nicotinamide. Finally, we showed that NfrA1 is able to rapidly scavenge H(2)O(2) produced during the oxidative process or added exogenously.

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Primary Citation of related structures
3N2S