X-ray diffraction
2.1Å resolution

BluB bound to flavin anion (charge transfer complex)


Function and Biology Details

Reaction catalysed:
FMNH(2) + NADH + O(2) = 5,6-dimethylbenzimidazole + D-erythrose 4-phosphate + NAD(+) + other product(s)
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
5,6-dimethylbenzimidazole synthase Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 230 amino acids
Theoretical weight: 25.82 KDa
Source organism: Sinorhizobium meliloti
Expression system: Escherichia coli BL21(DE3)
  • Canonical: Q92PC8 (Residues: 1-227; Coverage: 100%)
Gene names: R01841, SMc00166, bluB
Sequence domains: Nitroreductase family
Structure domains: NADH Oxidase

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.2.2
Spacegroup: P21
Unit cell:
a: 63.449Å b: 169.872Å c: 90.954Å
α: 90° β: 89.99° γ: 90°
R R work R free
0.206 0.204 0.25
Expression system: Escherichia coli BL21(DE3)