1ZKR

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

• PDB DOI: https://doi.org/10.2210/pdb1ZKR/pdb

• Classification: ALLERGEN
• Organism(s): Felis catus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-05-04 Released: 2006-05-16 
• Deposition Author(s): Kaiser, L., Cirkovic Velickovic, T., Adedoyin, J., Thunberg, S., Gronlund, H., Gafvelin, G., van Hage, M., Achour, A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free: 0.220 
• R-Value Work: 0.191 
• R-Value Observed: 0.192 

Literature

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

Kaiser, L., Cirkovic Velickovic, T., Adedoyin, J., Thunberg, S., Gronlund, H., Gafvelin, G., van Hage, M., Achour, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 34.42 kDa 
• Atom Count: 2,495 
• Modelled Residue Count: 291 
• Deposited Residue Count: 306 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Major allergen I polypeptide, fused chain 1, chain 2	A, B	153	Felis catus	Mutation(s): 0  Gene Names: CH2
UniProt
Find proteins for P30438 (Felis catus) Explore P30438  Go to UniProtKB:  P30438
Find proteins for P30440 (Felis catus) Explore P30440  Go to UniProtKB:  P30440
UniProt Groups	P30438P30440

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free: 0.220 
• R-Value Work: 0.191 
• R-Value Observed: 0.192 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 38.588	α = 70.8
b = 42.996	β = 80.56
c = 48.906	γ = 81.53

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-05-16 
Deposition Author(s): Kaiser, L., Cirkovic Velickovic, T., Adedoyin, J., Thunberg, S., Gronlund, H., Gafvelin, G., van Hage, M., Achour, A.

Revision History  

• Version 1.0: 2006-05-16
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-07-26
  Changes: Data collection, Source and taxonomy
• Version 1.4: 2024-11-13
  Changes: Data collection, Database references, Structure summary