1IJB

The von Willebrand Factor mutant (I546V) A1 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 

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
  • Structures With Same Primary Citation

  • 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 ...

    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
      (1998) J Biol Chem 273: 10396

    Organizational Affiliation

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



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
von Willebrand factor
A
202Homo sapiensMutation(s): 1 
Gene Names: VWFF8VWF
Find proteins for P04275 (Homo sapiens)
Go to UniProtKB:  P04275
NIH Common Fund Data Resources
PHAROS  P04275
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.01α = 90
b = 86.01β = 90
c = 68.502γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • 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