3FT1

Crystal structure of pollen allergen Phl p 3

• PDB DOI: https://doi.org/10.2210/pdb3FT1/pdb

• Classification: ALLERGEN
• Organism(s): Phleum pratense
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-01-12 Released: 2010-01-12 
• Deposition Author(s): Keller, W., Devanaboyina, S.C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free: 0.222 
• R-Value Work: 0.170 
• R-Value Observed: 0.170 

Literature

High-resolution crystal structure and IgE recognition of the major grass pollen allergen Phl p 3.

Devanaboyina, S.C., Cornelius, C., Lupinek, C., Fauland, K., Dall'Antonia, F., Nandy, A., Hagen, S., Flicker, S., Valenta, R., Keller, W.

(2014) Allergy 69: 1617-1628

• PubMed: 25123586 
• DOI: https://doi.org/10.1111/all.12511
• Primary Citation of Related Structures:  
  3FT1, 3FT9


• PubMed Abstract: 
  

  Group 2 and 3 grass pollen allergens are major allergens with high allergenic activity and exhibit structural similarity with the C-terminal portion of major group 1 allergens. In this study, we aimed to determine the crystal structure of timothy grass pollen allergen, Phl p 3, and to study its IgE recognition and cross-reactivity with group 2 and group 1 allergens.

---

Organizational Affiliation: 

Institute for Molecular Biosciences, Structural Biology, University of Graz, Graz, Austria.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Macromolecule Content

• Total Structure Weight: 45.87 kDa 
• Atom Count: 3,796 
• Modelled Residue Count: 398 
• Deposited Residue Count: 400 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phl p 3 allergen	A, B, C, D	100	Phleum pratense	Mutation(s): 0
UniProt
Find proteins for Q69B42 (Phleum pratense) Explore Q69B42  Go to UniProtKB:  Q69B42

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	E [auth A], F [auth A], G [auth A], H [auth B], I [auth B], J [auth B], K [auth C], L [auth C], M [auth D], N [auth D]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free: 0.222 
• R-Value Work: 0.170 
• R-Value Observed: 0.170 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.068	α = 90
b = 74.447	β = 104.59
c = 56.693	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-01-12 
Deposition Author(s): Keller, W., Devanaboyina, S.C.

Revision History  

• Version 1.0: 2010-01-12
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-04-12
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2023-09-20
  Changes: Data collection, Refinement description