Macromolecule Content

• Total Structure Weight: 10.18 kDa 
• Atom Count: 720 
• Residue Count: 89 
• Unique protein chains: 1

1Q38

Anastellin

• DOI: 10.2210/pdb1Q38/pdb

• Classification: CELL ADHESION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-07-28 Released: 2003-11-04 
• Deposition Author(s): Briknarova, K., Akerman, M.E., Hoyt, D.W., Ruoslahti, E., Ely, K.R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 35 
• Selection Criteria: structures with the lowest energy 

Literature

Anastellin, an FN3 fragment with fibronectin polymerization activity, resembles amyloid fibril precursors

Briknarova, K., Akerman, M.E., Hoyt, D.W., Ruoslahti, E., Ely, K.R.

(2003) J Mol Biol 332: 205-215

• PubMed: 12946358 
• DOI: 10.1016/s0022-2836(03)00890-8
• Primary Citation of Related Structures:  
  1Q38


• PubMed Abstract: 
  

Anastellin is a carboxy-terminal fragment of the first FN3 domain from human fibronectin. It is capable of polymerizing fibronectin in vitro, and it displays anti-tumor, anti-metastatic and anti-angiogenic properties in vivo. We have determined the structure of anastellin using nuclear magnetic resonance spectroscopy and identified residues critical for its activity. Anastellin exhibits dynamic fluctuations and conformational exchange in solution. Its overall topology is very similar to the corresponding region of full-length FN3 domains. However, its hydrophobic core becomes solvent-accessible and some of its beta-strands lose their protection against hydrogen bonding to beta-strands from other molecules. These features seem to be relevant for the fibronectin polymerization activity of anastellin and resemble the characteristics of amyloid fibril precursors. We suggest that this analogy is not random and may reflect similarities between fibronectin and amyloid fibril formation.

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Related Citations: 

• Superfibronectin is a functionally distinct form of fibronectin
  Morla, A., Zhang, Z., Ruoslahti, E.
  (1994) Nature 367: 193

• A polymeric form of fibronectin has antimetastatic effects against multiple tumor types
  Pasqualini, R., Bourdoulous, S., Koivunen, E., Woods Jr., V.L., Ruoslahti, E.
  (1996) Nat Med 2: 1197

• A fibronectin fragment inhibits tumor growth, angiogenesis, and metastasis
  Yi, M., Ruoslahti, E.
  (2001) Proc Natl Acad Sci U S A 98: 620

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Organizational Affiliation: 

The Burnham Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037-1062, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fibronectin	A	89	Homo sapiens	Mutation(s): 0  Gene Names: FN1 OR FN, FN1, FN
Find proteins for P02751 (Homo sapiens) Explore P02751  Go to UniProtKB:  P02751
NIH Common Fund Data Resources
PHAROS  P02751 GTEx  ENSG00000115414

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 35 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 1Q38 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-07-28 
• Released Date: 2003-11-04 
Deposition Author(s): Briknarova, K., Akerman, M.E., Hoyt, D.W., Ruoslahti, E., Ely, K.R.

Revision History 

• Version 1.0: 2003-11-04
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance