X-ray diffraction
1.9Å resolution

Crystal structure of major allergens, Bla g 4 from cockroaches


Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Allergen Bla g 4 Chains: A, B
Molecule details ›
Chains: A, B
Length: 176 amino acids
Theoretical weight: 20.38 KDa
Source organism: Blattella germanica
Expression system: Escherichia coli
  • Canonical: P54962 (Residues: 7-182; Coverage: 100%)
Sequence domains: Triabin
Structure domains: Lipocalin

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X12C
Spacegroup: P41
Unit cell:
a: 60.166Å b: 60.166Å c: 124.93Å
α: 90° β: 90° γ: 90°
R R work R free
0.218 0.218 0.253
Expression system: Escherichia coli