1BWO | pdb_00001bwo

THE CRYSTAL STRUCTURE OF WHEAT NON-SPECIFIC TRANSFER PROTEIN COMPLEXED WITH TWO MOLECULES OF PHOSPHOLIPID AT 2.1 A RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1BWO/pdb

• Classification: LIPID TRANSFER PROTEIN
• Organism(s): Triticum aestivum
• Mutation(s): No 


• Deposited: 1998-09-25 Released: 1999-08-27 
• Deposition Author(s): Charvolin, D., Cohen-Addad, C., Pebay-Peyroula, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.213 (Depositor), 0.219 (DCC) 
• R-Value Work: 
  0.163 (Depositor), 0.172 (DCC) 
• R-Value Observed: 
  0.163 (Depositor) 

Literature

The crystal structure of a wheat nonspecific lipid transfer protein (ns-LTP1) complexed with two molecules of phospholipid at 2.1 A resolution.

Charvolin, D., Douliez, J.P., Marion, D., Cohen-Addad, C., Pebay-Peyroula, E.

(1999) Eur J Biochem 264: 562-568

• PubMed: 10491104 
• DOI: https://doi.org/10.1046/j.1432-1327.1999.00667.x
• Primary Citation Related Structures: 
  1BWO


• PubMed Abstract: 
  

  Nonspecific lipid transfer proteins (ns-LTP1) form a multigenic protein family in plants. In vitro they are able to bind all sort of lipids but their function, in vivo, remains speculative. A ns-LTP1 isolated from wheat seed was crystallized in the presence of lyso-myristoyl-phosphatidylcholine (LMPC). The structure was solved by molecular replacement and refined to 2.1 A resolution to an R-factor of 16.3% and a free R-factor of 21.3%. It reveals for the first time that the protein binds two LMPC molecules that are inserted head to tail in a hydrophobic cavity. A detailed study of the structure leads to the conclusion that there are two lipid-binding sites, one of which shows a higher affinity for the LMPC than the other. Comparison with other structures of lipid-bound ns-LTP1 suggests that the presence of two binding sites is a general feature of plant ns-LTP1.

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Organizational Affiliation: 
• Institut de Biologie Structural Jean-Pierre Ebel, CEA-CNRS, Nantes, France.

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.

Macromolecule Content 

• Total Structure Weight: 21.11 kDa 
• Atom Count: 1,625 
• Modeled Residue Count: 180 
• Deposited Residue Count: 180 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NONSPECIFIC LIPID-TRANSFER PROTEIN	A, B	90	Triticum aestivum	Mutation(s): 0
UniProt
Find proteins for P24296 (Triticum aestivum) Explore P24296  Go to UniProtKB:  P24296

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LPC	C [auth A], D [auth A], E [auth B], F [auth B]	[1-MYRISTOYL-GLYCEROL-3-YL]PHOSPHONYLCHOLINE C22 H47 N O7 P VXUOFDJKYGDUJI-OAQYLSRUSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.213 (Depositor), 0.219 (DCC) 
• R-Value Work:  0.163 (Depositor), 0.172 (DCC) 
• R-Value Observed: 0.163 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.11	α = 90
b = 56.89	β = 90
c = 70.63	γ = 90

Software Package:

Software Name	Purpose
XDS	data scaling
AMoRE	phasing
X-PLOR	refinement
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-08-27 
Deposition Author(s): Charvolin, D., Cohen-Addad, C., Pebay-Peyroula, E.

Revision History  

• Version 1.0: 1999-08-27
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2018-05-30
  Changes: Advisory, Atomic model, Data collection, Derived calculations
• Version 2.1: 2024-11-20
  Changes: Data collection, Database references, Derived calculations, Structure summary