2VDR

Integrin AlphaIIbBeta3 Headpiece Bound to a chimeric Fibrinogen Gamma chain peptide, LGGAKQRGDV


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Basis for Distinctive Recognition of Fibrinogen Gammac Peptide by the Platelet Integrin Alphaiibbeta3.

Springer, T.A.Zhu, J.Xiao, T.

(2008) J Cell Biol 182: 791

  • DOI: 10.1083/jcb.200801146
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Hemostasis and thrombosis (blood clotting) involve fibrinogen binding to integrin alpha(IIb)beta(3) on platelets, resulting in platelet aggregation. alpha(v)beta(3) binds fibrinogen via an Arg-Asp-Gly (RGD) motif in fibrinogen's alpha subunit. alpha( ...

    Hemostasis and thrombosis (blood clotting) involve fibrinogen binding to integrin alpha(IIb)beta(3) on platelets, resulting in platelet aggregation. alpha(v)beta(3) binds fibrinogen via an Arg-Asp-Gly (RGD) motif in fibrinogen's alpha subunit. alpha(IIb)beta(3) also binds to fibrinogen; however, it does so via an unstructured RGD-lacking C-terminal region of the gamma subunit (gammaC peptide). These distinct modes of fibrinogen binding enable alpha(IIb)beta(3) and alpha(v)beta(3) to function cooperatively in hemostasis. In this study, crystal structures reveal the integrin alpha(IIb)beta(3)-gammaC peptide interface, and, for comparison, integrin alpha(IIb)beta(3) bound to a lamprey gammaC primordial RGD motif. Compared with RGD, the GAKQAGDV motif in gammaC adopts a different backbone configuration and binds over a more extended region. The integrin metal ion-dependent adhesion site (MIDAS) Mg(2+) ion binds the gammaC Asp side chain. The adjacent to MIDAS (ADMIDAS) Ca(2+) ion binds the gammaC C terminus, revealing a contribution for ADMIDAS in ligand binding. Structural data from this natively disordered gammaC peptide enhances our understanding of the involvement of gammaC peptide and integrin alpha(IIb)beta(3) in hemostasis and thrombosis.


    Related Citations: 
    • Structural Basis for Allostery in Integrins and Binding to Fibrinogen-Mimetic Therapeutics
      Xiao, T., Takagi, J., Coller, B.S., Wang, J.-H., Springer, T.A.
      (2004) Nature 432: 59

    Organizational Affiliation

    Department of Pathology, Immune Disease Institute, Harvard Medical School, Boston, MA 02115, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INTEGRIN ALPHA-IIB
A
452Homo sapiensMutation(s): 0 
Gene Names: ITGA2BGP2BITGAB
Find proteins for P08514 (Homo sapiens)
Go to UniProtKB:  P08514
NIH Common Fund Data Resources
PHAROS  P08514

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
INTEGRIN BETA-3
B
461Homo sapiensMutation(s): 0 
Gene Names: ITGB3GP3A
Find proteins for P05106 (Homo sapiens)
Go to UniProtKB:  P05106
NIH Common Fund Data Resources
PHAROS  P05106
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FIBRINOGEN
C
10Homo sapiensMutation(s): 1 
Gene Names: FGGPRO2061
Find proteins for P02679 (Homo sapiens)
Go to UniProtKB:  P02679
NIH Common Fund Data Resources
PHAROS  P02679

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
MONOCLONAL ANTIBODY 10E5 HEAVY CHAIN
H
221Mus musculusMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
MONOCLONAL ANTIBODY 10E5 LIGHT CHAIN
L
214Mus musculusMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
MAN
Query on MAN

Download CCD File 
B
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.328α = 90
b = 148.328β = 90
c = 176.793γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-01-30
    Changes: Data collection, Experimental preparation, Other
  • Version 1.3: 2019-02-06
    Changes: Data collection, Experimental preparation