1IJK

The von Willebrand Factor mutant (I546V) A1 domain-botrocetin Complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural basis of von Willebrand factor activation by the snake toxin botrocetin.

Fukuda, K., Doggett, T.A., Bankston, L.A., Cruz, M.A., Diacovo, T.G., Liddington, R.C.

(2002) Structure 10: 943-950

  • DOI: 10.1016/s0969-2126(02)00787-6
  • Primary Citation of Related Structures:  
    1IJB, 1IJK

  • PubMed Abstract: 

    • The A1 domain of von Willebrand factor (vWF) mediates platelet adhesion to sites of vascular injury by binding to the platelet receptor glycoprotein Ib (GpIb), an interaction that is regulated by hydrodynamic shear forces. The GpIb binding surface of A1 is distinct from a regulatory region, suggesting that ligand binding is controlled allosterically ...

    The A1 domain of von Willebrand factor (vWF) mediates platelet adhesion to sites of vascular injury by binding to the platelet receptor glycoprotein Ib (GpIb), an interaction that is regulated by hydrodynamic shear forces. The GpIb binding surface of A1 is distinct from a regulatory region, suggesting that ligand binding is controlled allosterically. Here we report the crystal structures of the "gain-of-function" mutant A1 domain (I546V) and its complex with the exogenous activator botrocetin. We show that botrocetin switches the mutant A1 back toward the wild-type conformation, suggesting that affinity is enhanced by augmenting the GpIb binding surface rather than through allosteric control. Functional studies of platelet adhesion under flow further suggest that the activation mechanism is distinct from that of the gain-of-function mutation.

    Related Citations: 
    • Crystal structure of the von Willebrand factor A1 domain and implications for the binding of platelet glycoprotein Ib
      Emsley, J., Cruz, M., Handin, R., Liddington, R.
      (1998) J Biol Chem 273: 10396
    Organizational Affiliation: 

    The Burnham Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
von Willebrand factor A202Homo sapiensMutation(s): 1 
Gene Names: VWF, F8VWF
Find proteins for P04275 (Homo sapiens)
Explore P04275 
Go to UniProtKB:  P04275
NIH Common Fund Data Resources
PHAROS:  P04275
GTEx:  ENSG00000110799
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Botrocetin B133Bothrops jararacaMutation(s): 0 
Find proteins for P22029 (Bothrops jararaca)
Explore P22029 
Go to UniProtKB:  P22029
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Botrocetin C125Bothrops jararacaMutation(s): 0 
Find proteins for P22030 (Bothrops jararaca)
Explore P22030 
Go to UniProtKB:  P22030
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.664α = 90
b = 66.672β = 105.41
c = 69.402γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance