1LRI | pdb_00001lri

BETA-CRYPTOGEIN-CHOLESTEROL COMPLEX

• PDB DOI: https://doi.org/10.2210/pdb1LRI/pdb

• Classification: TOXIN
• Organism(s): Phytophthora cryptogea
• Mutation(s): No 


• Deposited: 2002-05-15 Released: 2002-05-29 
• Deposition Author(s): Lascombe, M.-B., Ponchet, M., Venard, P., Milat, M.-L., Blein, J.-P., Prange, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 
  0.188 (Depositor), 0.142 (DCC) 
• R-Value Work: 
  0.127 (Depositor), 0.136 (DCC) 
• R-Value Observed: 
  0.127 (Depositor) 

Starting Model: experimental

Literature

The 1.45 A resolution structure of the cryptogein-cholesterol complex: a close-up view of a sterol carrier protein (SCP) active site.

Lascombe, M.B., Ponchet, M., Venard, P., Milat, M.L., Blein, J.P., Prange, T.

(2002) Acta Crystallogr D Biol Crystallogr 58: 1442-1447

• PubMed: 12198300 
• DOI: https://doi.org/10.1107/S0907444902011745
• Primary Citation Related Structures: 
  1LRI


• PubMed Abstract: 
  

  Cryptogein is a small 10 kDa elicitor produced by the phytoparasitic oomycete Phytophthora cryptogea. The protein also displays a sterol carrier activity. The native protein crystallizes in space group P4(1)22, with unit-cell parameters a = b = 46.51, c = 134.9 A (diffraction limit: 2.1 A). Its complex with cholesterol crystallizes in space group C222(1), with unit-cell parameters a = 30.96, b = 94.8, c = 65.3 A and a resolution enhanced to 1.45 A. The large inner non-specific hydrophobic cavity is able to accommodate a large variety of 3-beta-hydroxy sterols. Cryptogein probably acts as a sterol shuttle helping the pathogen to grow and complete its life cycle.

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Organizational Affiliation: 
• Laboratoire de Cristallographie et RMN Biologiques (UMR-8015, CNRS), Faculté de Pharmacie, 4 Avenue de l'Observatoire, 75270 Paris CEDEX 06, France. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 10.75 kDa 
• Atom Count: 861 
• Modeled Residue Count: 98 
• Deposited Residue Count: 98 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-elicitin cryptogein	A	98	Phytophthora cryptogea	Mutation(s): 0
UniProt
Find proteins for P15570 (Phytophthora cryptogea) Explore P15570  Go to UniProtKB:  P15570

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CLR	C [auth A]	CHOLESTEROL C27 H46 O HVYWMOMLDIMFJA-DPAQBDIFSA-N
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free:  0.188 (Depositor), 0.142 (DCC) 
• R-Value Work:  0.127 (Depositor), 0.136 (DCC) 
• R-Value Observed: 0.127 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 30.964	α = 90
b = 94.8	β = 90
c = 65.296	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
SHELXL-97	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-05-29 
Deposition Author(s): Lascombe, M.-B., Ponchet, M., Venard, P., Milat, M.-L., Blein, J.-P., Prange, T.

Revision History  

• Version 1.0: 2002-05-29
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary