PDBe 4l8v

X-ray diffraction
2.09Å resolution

Crystal Structure of A12K/D35S mutant myo-inositol dehydrogenase from Bacillus subtilis with bound cofactor NADP


Function and Biology Details

Reactions catalysed:
Myo-inositol + NAD(+) = 2,4,6/3,5-pentahydroxycyclohexanone + NADH
1D-chiro-inositol + NAD(+) = 2D-2,3,5/4,6-pentahydroxycyclohexanone + NADH
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Inositol 2-dehydrogenase/D-chiro-inositol 3-dehydrogenase Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 337 amino acids
Theoretical weight: 37.65 KDa
Source organism: Bacillus subtilis subsp. subtilis str. 168
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P26935 (Residues: 1-337; Coverage: 98%)
Gene names: BSU39700, E83G, idh, iolG
Sequence domains:
Structure domains:

Ligands and Environments

Cofactor: Ligand NAP 4 x NAP
1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CLSI BEAMLINE 08ID-1
Spacegroup: P21
Unit cell:
a: 50.63Å b: 190.29Å c: 90.24Å
α: 90° β: 100.31° γ: 90°
R R work R free
0.19 0.188 0.226
Expression system: Escherichia coli BL21(DE3)