3GXE

Complex of a Low Affinity Collagen Site with the Fibronectin 8-9FnI Domain Pair


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural analysis of collagen type I interactions with human fibronectin reveals a cooperative binding mode

Erat, M.C.Sladek, B.Campbell, I.D.Vakonakis, I.

(2013) J.Biol.Chem. 288: 17441-17450

  • DOI: 10.1074/jbc.M113.469841

  • PubMed Abstract: 
  • Despite its biological importance, the interaction between fibronectin (FN) and collagen, two abundant and crucial tissue components, has not been well characterized on a structural level. Here, we analyzed the four interactions formed between epitop ...

    Despite its biological importance, the interaction between fibronectin (FN) and collagen, two abundant and crucial tissue components, has not been well characterized on a structural level. Here, we analyzed the four interactions formed between epitopes of collagen type I and the collagen-binding fragment (gelatin-binding domain (GBD)) of human FN using solution NMR, fluorescence, and small angle x-ray scattering methods. Collagen association with FN modules (8-9)FnI occurs through a conserved structural mechanism but exhibits a 400-fold disparity in affinity between collagen sites. This disparity is reduced in the full-length GBD, as (6)FnI(1-2)FnII(7)FnI binds a specific collagen epitope next to the weakest (8-9)FnI-binding site. The cooperative engagement of all GBD modules with collagen results in four broadly equipotent FN-collagen interaction sites. Collagen association stabilizes a distinct monomeric GBD conformation in solution, giving further evidence to the view that FN fragments form well defined functional and structural units.


    Organizational Affiliation

    Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fibronectin
B, A
93Homo sapiensMutation(s): 2 
Gene Names: FN1 (FN)
Find proteins for P02751 (Homo sapiens)
Go to Gene View: FN1
Go to UniProtKB:  P02751
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Collagen alpha-1(I) chain
F
23Homo sapiensMutation(s): 0 
Gene Names: COL1A1
Find proteins for P02452 (Homo sapiens)
Go to Gene View: COL1A1
Go to UniProtKB:  P02452
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Collagen alpha-1(I) chain
E
23Homo sapiensMutation(s): 0 
Gene Names: COL1A1
Find proteins for P02452 (Homo sapiens)
Go to Gene View: COL1A1
Go to UniProtKB:  P02452
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
HZP
Query on HZP
F
L-peptide linkingC5 H9 N O3PRO
HYP
Query on HYP
E
L-PEPTIDE LINKINGC5 H9 N O3PRO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.219 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 56.570α = 90.00
b = 56.570β = 90.00
c = 152.661γ = 120.00
Software Package:
Software NamePurpose
ADSCdata collection
PDB_EXTRACTdata extraction
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-05-15
    Type: Database references, Refinement description
  • Version 1.3: 2014-01-29
    Type: Database references