1OWW

Solution structure of the first type III module of human fibronectin determined by 1H, 15N NMR spectroscopy


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 24 
  • Conformers Submitted: 24 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and functional significance of mechanically unfolded fibronectin type III1 intermediates

Gao, M.Craig, D.Lequin, O.Campbell, I.D.Vogel, V.Schulten, K.

(2003) Proc Natl Acad Sci U S A 100: 14784-14789

  • DOI: 10.1073/pnas.2334390100
  • Primary Citation of Related Structures:  
    1OWW

  • PubMed Abstract: 
  • Fibronectin (FN) forms fibrillar networks coupling cells to the extracellular matrix. The formation of FN fibrils, fibrillogenesis, is a tightly regulated process involving the exposure of cryptic binding sites in individual FN type III (FN-III) repe ...

    Fibronectin (FN) forms fibrillar networks coupling cells to the extracellular matrix. The formation of FN fibrils, fibrillogenesis, is a tightly regulated process involving the exposure of cryptic binding sites in individual FN type III (FN-III) repeats presumably exposed by mechanical tension. The FN-III1 module has been previously proposed to contain such cryptic sites that promote the assembly of extracellular matrix FN fibrils. We have combined NMR and steered molecular dynamics simulations to study the structure and mechanical unfolding pathway of FN-III1. This study finds that FN-III1 consists of a beta-sandwich structure that unfolds to a mechanically stable intermediate about four times the length of the native folded state. Considering previous experimental findings, our studies provide a structural model by which mechanical stretching of FN-III1 may induce fibrillogenesis through this partially unfolded intermediate.


    Related Citations: 
    • Solution structure of the first type III module of human fibronectin determined by 1H, 15N NMR spectroscopy
      Lequin, O., Sachchidanand, D., Staunton, D., Potts, J., Werner, J.M., Campbell, I.D.
      () To be published --: --

    Organizational Affiliation

    Beckman Institute and Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fibronectin first type III moduleA98Homo sapiensMutation(s): 0 
Gene Names: FN1FN
Find proteins for P02751 (Homo sapiens)
Explore P02751 
Go to UniProtKB:  P02751
NIH Common Fund Data Resources
PHAROS  P02751
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 24 
  • Conformers Submitted: 24 
  • OLDERADO: 1OWW Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-07
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance