Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 70.23 kDa 
• Atom Count: 5536 
• Residue Count: 630 
• Unique protein chains: 3

1FNS

CRYSTAL STRUCTURE OF THE VON WILLEBRAND FACTOR (VWF) A1 DOMAIN I546V MUTANT IN COMPLEX WITH THE FUNCTION BLOCKING FAB NMC4

• DOI: 10.2210/pdb1FNS/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Mus musculus, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-08-23 Released: 2000-10-18 
• Deposition Author(s): Varughese, K.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.207 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 

Literature

von Willebrand factor conformation and adhesive function is modulated by an internalized water molecule.

Celikel, R., Ruggeri, Z.M., Varughese, K.I.

(2000) Nat Struct Biol 7: 881-884

• PubMed: 11017197 
• DOI: 10.1038/79639
• Primary Citation of Related Structures:  
  1FNS


• PubMed Abstract: 
  

Platelet participation in hemostasis and arterial thrombosis requires the binding of glycoprotein (GP) Ibalpha to von Willebrand factor (vWF). Hemodynamic forces enhance this interaction, an effect mimicked by the substitution I546V in the vWF A1 domain. A water molecule becomes internalized near the deleted Ile methyl group. The change in hydrophobicity of the local environment causes positional changes propagated over a distance of 27 A. As a consequence, a major reorientation of a peptide plane occurs in a surface loop involved in GP Ibalpha binding. This distinct vWF conformation shows increased platelet adhesion and provides a structural model for the initial regulation of thrombus formation.

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Related Citations: 

• Crystal Structure of the Von Willebrand Factor A1 D Domain in Complex with the Function Blocking Nmc-4 DOMAIN IN COMPLEX WITH THE FUNCTION BLOCKING NMC-4 FAB
  Celikel, R., Varughese, K.I., Madhusudan, Yoshioka, A., Ware, J., Ruggeri, Z.M.
  (1998) Nat Struct Biol 5: 189

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Organizational Affiliation: 

Roon Research Center for Arteriosclerosis and Thrombosis, Division of Experimental Hemostasis and Thrombosis, Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IMMUNOGLOBULIN NMC-4 IGG1	L	214	Mus musculus	Mutation(s): 0  Gene Names: Igkc
Find proteins for P01837 (Mus musculus) Explore P01837  Go to UniProtKB:  P01837

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IMMUNOGLOBULIN NMC-4 IGG1	H	225	Mus musculus	Mutation(s): 0  Gene Names: Ighg1, Igh-4
Find proteins for P01868 (Mus musculus) Explore P01868  Go to UniProtKB:  P01868

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
VON WILLEBRAND FACTOR	A	196	Homo sapiens	Mutation(s): 0  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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.207 
• R-Value Work: 0.172 
• R-Value Observed: 0.172 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 209.396	α = 90
b = 62.673	β = 108.88
c = 73.789	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-23 
• Released Date: 2000-10-18 
Deposition Author(s): Varughese, K.I.

Revision History 

• Version 1.0: 2000-10-18
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model