1UZQ

Integrin binding cbEGF22-TB4-cbEGF33 fragment of human fibrillin-1, apo form cbEGF23 domain only.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.254 
  • R-Value Observed: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of the Integrin Binding Fragment from Fibrillin-1 Gives New Insights Into Microfibril Organization

Lee, S.S.J.Knott, V.Jovanovi, J.Harlos, K.Grimes, J.Choulier, L.Mardon, H.Stuart, D.I.Handford, P.A.

(2004) Structure 12: 717

  • DOI: 10.1016/j.str.2004.02.023
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Human fibrillin-1, the major structural protein of extracellular matrix (ECM) 10-12 nm microfibrils, is dominated by 43 calcium binding epidermal growth factor-like (cbEGF) and 7 transforming growth factor beta binding protein-like (TB) domains. Crys ...

    Human fibrillin-1, the major structural protein of extracellular matrix (ECM) 10-12 nm microfibrils, is dominated by 43 calcium binding epidermal growth factor-like (cbEGF) and 7 transforming growth factor beta binding protein-like (TB) domains. Crystal structures reveal the integrin binding cbEGF22-TB4-cbEGF23 fragment of human fibrillin-1 to be a Ca(2+)-rigidified tetragonal pyramid. We suggest that other cbEGF-TB pairs within the fibrillins may adopt a similar orientation to cbEGF22-TB4. In addition, we have located a flexible RGD integrin binding loop within TB4. Modeling, cell attachment and spreading assays, immunocytochemistry, and surface plasmon resonance indicate that cbEGF22 bound to TB4 is a requirement for integrin activation and provide insight into the molecular basis of the fibrillin-1 interaction with alphaVbeta3. In light of our data, we propose a novel model for the assembly of the fibrillin microfibril and a mechanism to explain its extensibility.


    Organizational Affiliation

    The Henry Wellcome Building of Genomic Medicine, Roosevelt Drive, Oxford OX3 7BN, United Kingdom.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIBRILLIN-1
A
162Homo sapiensMutation(s): 0 
Gene Names: FBN1FBN
Find proteins for P35555 (Homo sapiens)
Go to UniProtKB:  P35555
NIH Common Fund Data Resources
PHAROS  P35555
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.254 
  • R-Value Observed: 0.254 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.4α = 90
b = 70.8β = 90
c = 102.7γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-04-08
    Type: Initial release
  • Version 1.1: 2011-05-07
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-08
    Changes: Data collection, Experimental preparation, Other