2GEE image
Deposition Date 2006-03-19
Release Date 2006-10-17
Last Version Date 2023-08-30
Entry Detail
PDB ID:
2GEE
Title:
Crystal Structure of Human Type III Fibronectin Extradomain B and Domain 8
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.01 Å
R-Value Free:
0.30
R-Value Work:
0.24
R-Value Observed:
0.24
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:hypothetical protein
Chain IDs:A
Chain Length:203
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Structural insights into fibronectin type III domain-mediated signaling.
J.Mol.Biol. 367 303 309 (2007)
PMID: 17261313 DOI: 10.1016/j.jmb.2006.10.017

Abstact

The alternatively spliced type III extradomain B (EIIIB) of fibronectin (FN) is expressed only during embryogenesis, wound healing and tumorigenesis. The biological function of this domain is unclear. We describe here the first crystal structure of the interface between alternatively spliced EIIIB and its adjacent FN type III domain 8 (FN B-8). The opened CC' loop of EIIIB, and the rotation and tilt of EIIIB allow good access to the FG loop of FN-8, which is normally hindered by the CC' loop of FN-7. In addition, the AGEGIP sequence of the CC'' loop of EIIIB replaces the NGQQGN sequence of the CC' loop of FN-7. Finally, the CC'' loop of EIIIB forms an acidic groove with FN-8. These structural findings warrant future studies directed at identifying potential binding partners for FN B-8 interface, linking EIIIB to skeletal and cartilaginous development, wound healing, and tumorigenesis, respectively.

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