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THE STRUCTURE OF ESCHERICHIA COLI NITROREDUCTASE COMPLEXED WITH NICOTINIC ACID

X-ray diffraction
1.8Å resolution
PDB entry 1icu coloured by chain, front view.
PDB entry 1icu coloured by chain, side view.
PDB entry 1icu coloured by chain, top view.
Source organism: Escherichia coli
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Oxygen-insensitive NAD(P)H nitroreductase
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Multimeric state: homo dimer
Accessible surface area: 17094.26 Å2
Buried surface area: 9648.04 Å2
Dissociation area: 3,909.49 Å2
Dissociation energy (ΔGdiss): 45.13 kcal/mol
Dissociation entropy (TΔSdiss): 13.93 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-153657
Assembly 2
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Assembly Name: Oxygen-insensitive NAD(P)H nitroreductase
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Multimeric state: homo dimer
Accessible surface area: 17053.83 Å2
Buried surface area: 9720.43 Å2
Dissociation area: 3,944.19 Å2
Dissociation energy (ΔGdiss): 47.28 kcal/mol
Dissociation entropy (TΔSdiss): 13.94 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-153657

Macromolecules

Oxygen-insensitive NAD(P)H nitroreductase
Chains: A, B, C, D
Length: 217 amino acids
Theoretical weight: 23.94 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P38489 (Residues: 1-217; Coverage: 100%)
Gene names: JW0567, b0578, dprA, nfnB, nfsB, nfsI, ntr
Pfam: Nitroreductase family
InterPro:
CATH: NADH Oxidase
SCOP: NADH oxidase/flavin reductase
Oxygen-insensitive NAD(P)H nitroreductase in PDB entry 1icu, assembly 1, front view.
Oxygen-insensitive NAD(P)H nitroreductase in PDB entry 1icu, assembly 1, side view.
Oxygen-insensitive NAD(P)H nitroreductase in PDB entry 1icu, assembly 1, top view.
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