Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14.28 kDa 
• Atom Count: 1,021 
• Modelled Residue Count: 130 
• Deposited Residue Count: 131 
• Unique protein chains: 1

 1A0K

PROFILIN I FROM ARABIDOPSIS THALIANA

• PDB DOI: 10.2210/pdb1A0K/pdb

• Classification: CYTOSKELETON
• Organism(s): Arabidopsis thaliana
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1997-12-02 Released: 1998-03-18 
• Deposition Author(s): Shigeta Junior, R., Huddler, D., Lindberg, U., Schutt, C.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.238 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 

Literature

The crystal structure of a major allergen from plants.

Thorn, K.S., Christensen, H.E., Shigeta, R., Huddler, D., Shalaby, L., Lindberg, U., Chua, N.H., Schutt, C.E.

(1997) Structure 5: 19-32

• PubMed: 9016723 
• DOI: 10.1016/s0969-2126(97)00163-9
• Primary Citation of Related Structures:  
  1A0K, 3NUL


• PubMed Abstract: 
  

Profilins are small eukaryotic proteins involved in modulating the assembly of actin microfilaments in the cytoplasm. They are able to bind both phosphatidylinositol-4,5-bisphosphate and poly-L-proline (PLP) and thus play a critical role in signaling pathways. Plant profilins are of interest because immunological cross-reactivity between pollen and human profilin may be the cause of hay fever and broad allergies to pollens.

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Related Citations: 

• Arabidopsis Profilins are Functionally Similar to Yeast Profilins: Identification of a Vascular Bundle-Specific Profilin and a Pollen-Specific Profilin
  Christensen, H.E., Ramachandran, S., Tan, C.T., Surana, U., Dong, C.H., Chua, N.H.
  (1996) Plant J 10: 269

• Crystallization and Structure Determination of Bovine Profilin at 2.0 A Resolution
  Cedergren-Zeppezauer, E.S., Goonesekere, N.C., Rozycki, M.D., Myslik, J.C., Dauter, Z., Lindberg, U., Schutt, C.E.
  (1994) J Mol Biol 240: 459

• The Structure of Crystalline Profilin-Beta-Actin
  Schutt, C.E., Myslik, J.C., Rozycki, M.D., Goonesekere, N.C., Lindberg, U.
  (1993) Nature 365: 810

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Organizational Affiliation: 

Henry H Hoyt Laboratory, Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROFILIN	A	131	Arabidopsis thaliana	Mutation(s): 0  Gene Names: PFN, PRF1, PFN1, PRO1, At2g19760, F6F22.21
UniProt
Find proteins for Q42449 (Arabidopsis thaliana) Explore Q42449  Go to UniProtKB:  Q42449

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.238 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.05	α = 90
b = 43.53	β = 90
c = 59.87	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-03-18 
Deposition Author(s): Shigeta Junior, R., Huddler, D., Lindberg, U., Schutt, C.E.

Revision History  

• Version 1.0: 1998-03-18
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance