PDBe 1zkr

X-ray diffraction
1.64Å resolution

Crystal structure of the major cat allergen Fel d 1 (1+2)

Source organism: Felis catus
Entry authors: Kaiser L, Cirkovic Velickovic T, Adedoyin J, Thunberg S, Gronlund H, Gafvelin G, van Hage M, Achour A

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Major allergen I polypeptide chain 1; Major allergen I polypeptide chain 2 Chains: A, B
Molecule details ›
Chains: A, B
Length: 153 amino acids
Theoretical weight: 17.21 KDa
Source organism: Felis catus
Expression system: Escherichia coli
  • Canonical: P30438 (Residues: 23-92; Coverage: 100%)
  • Canonical: P30440 (Residues: 18-93; Coverage: 83%)
  • nullnull
Gene names: CH1, CH2
Sequence domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: MAX II BEAMLINE I711
Spacegroup: P1
Unit cell:
a: 38.588Å b: 42.996Å c: 48.906Å
α: 70.8° β: 80.56° γ: 81.53°
R R work R free
0.192 0.191 0.22
Expression system: Escherichia coli