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 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.3 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: https://doi.org/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) 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.


  • 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)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fibronectin first type III module98Homo sapiensMutation(s): 0 
Gene Names: FN1
UniProt & NIH Common Fund Data Resources
Find proteins for P02751 (Homo sapiens)
Explore P02751 
Go to UniProtKB:  P02751
GTEx:  ENSG00000115414 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02751
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 24 
  • Conformers Submitted: 24 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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
  • Version 1.3: 2021-07-07
    Changes: Data collection, Database references, Derived calculations, Experimental preparation, Refinement description