2WFN | pdb_00002wfn

Filamin A actin binding domain

• PDB DOI: https://doi.org/10.2210/pdb2WFN/pdb

• Classification: CONTRACTILE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2009-04-09 Released: 2009-10-27 
• Deposition Author(s): Ruskamo, S., Ylanne, J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 
  0.243 (Depositor), 0.245 (DCC) 
• R-Value Work: 
  0.225 (Depositor), 0.226 (DCC) 
• R-Value Observed: 
  0.226 (Depositor) 

Starting Model: experimental

Literature

Structure of the Human Filamin a Actin-Binding Domain

Ruskamo, S., Ylanne, J.

(2009) Acta Crystallogr D Biol Crystallogr 65: 1217

• PubMed: 19923718 
• DOI: https://doi.org/10.1107/S0907444909037330
• Primary Citation Related Structures: 
  2WFN


• PubMed Abstract: 
  

  Filamin A (FLNa) is a large dimeric protein that binds to actin filaments via its actin-binding domain (ABD). The crystal structure of this domain was solved at 3.2 A resolution. The domain adopts a closed conformation typical of other ABDs, but also forms a dimer both in crystallization conditions and in solution. The structure shows the localization of the residues mutated in patients with periventricular nodular heterotopia or otopalatodigital syndrome. Structural analysis predicts that mutations in both types of disorder may affect actin binding.

---

Organizational Affiliation: 
• The Department of Biological and Environmental Science, University of Jyväskylä, FIN-40014 Jyväskylä, Finland. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 63.18 kDa 
• Atom Count: 3,696 
• Modeled Residue Count: 455 
• Deposited Residue Count: 556 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FILAMIN-A	A, B	278	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P21333 (Homo sapiens) Explore P21333  Go to UniProtKB:  P21333
PHAROS:  P21333 GTEx:  ENSG00000196924

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth A], F [auth A], G [auth B], H [auth B], I [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free:  0.243 (Depositor), 0.245 (DCC) 
• R-Value Work:  0.225 (Depositor), 0.226 (DCC) 
• R-Value Observed: 0.226 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 111.5	α = 90
b = 125.9	β = 90
c = 128.9	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-10-27 
Deposition Author(s): Ruskamo, S., Ylanne, J.

Revision History  

• Version 1.0: 2009-10-27
  Type: Initial release
  
• Version 1.1: 2012-04-04
  Changes: Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
• Version 1.2: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description