PDBe 1nn4

X-ray diffraction
2.2Å resolution

Function and Biology Details

Reaction catalysed:
D-ribose 5-phosphate = D-ribulose 5-phosphate. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
homo dimer (preferred)
homo tetramer
Entry contents:
1 distinct polypeptide molecule
Ribose-5-phosphate isomerase B Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 162 amino acids
Theoretical weight: 17.48 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
  • Canonical: P37351 (Residues: 1-149; Coverage: 100%)
Gene names: JW4051, b4090, rpiB, yjcA
Sequence domains: Ribose/Galactose Isomerase
Structure domains: Ribose 5-phosphate Isomerase B; Chain: A,

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: I41
Unit cell:
a: 145.588Å b: 145.588Å c: 74.784Å
α: 90° β: 90° γ: 90°
R R work R free
0.217 0.216 0.262
Expression system: Escherichia coli