Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

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

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

Macromolecule Content

• Total Structure Weight: 10.38 kDa 
• Atom Count: 804 
• Modelled Residue Count: 96 
• Deposited Residue Count: 96 
• Unique protein chains: 1

1V05

Dimerization of human Filamin C: crystal structure of the domain 24

• PDB DOI: 10.2210/pdb1V05/pdb

• Classification: ACTIN-BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2004-03-22 Released: 2004-11-17 
• Deposition Author(s): Pudas, R., Kiema, T.-R., Ylanne, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.43 Å
• R-Value Free: 0.205 
• R-Value Work: 0.186 
• R-Value Observed: 0.188 

Literature

Structural Basis for Vertebrate Filamin Dimerization

Pudas, R., Kiema, T.-R., Butler, P.J.G., Stewart, M., Ylanne, J.

(2005) Structure 13: 111

• PubMed: 15642266 
• DOI: 10.1016/j.str.2004.10.014
• Primary Citation of Related Structures:  
  1V05


• PubMed Abstract: 
  

Filamins are essential in cell motility and many developmental processes. They are large actin cross linking proteins that contain actin binding domains in their N termini and a long rod region constructed from 24 tandem Ig domains. Dimerization is crucial for the actin crosslinking function of filamins and requires the most C-terminal Ig domain. We describe here the crystal structure of this 24th Ig domain (Ig24) of human filamin C and show how it mediates dimerization. The dimer interface is novel and quite different to that seen in the Dictyostelium discoideum filamin analog. The sequence signature of the dimerization interface suggests that the C-terminal domains of all vertebrate filamins share the same dimerization mechanism. Furthermore, we show that point mutations in the dimerization interface disrupt the dimer and that the dissociation constant for recombinant Ig24 is in the micromolar range.

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Organizational Affiliation: 

Biocenter Oulu and Department of Biochemistry, University of Oulu, Finland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FILAMIN C	A	96	Homo sapiens	Mutation(s): 0  Gene Names: FLNC, ABPL, FLN2
UniProt & NIH Common Fund Data Resources
Find proteins for Q14315 (Homo sapiens) Explore Q14315  Go to UniProtKB:  Q14315
PHAROS:  Q14315

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.43 Å
• R-Value Free: 0.205 
• R-Value Work: 0.186 
• R-Value Observed: 0.188 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.099	α = 90
b = 48.099	β = 90
c = 117.485	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-03-22 
• Released Date: 2004-11-17 
Deposition Author(s): Pudas, R., Kiema, T.-R., Ylanne, J.

Revision History  

• Version 1.0: 2004-11-17
  Type: Initial release
  
• Version 1.1: 2011-05-07
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-24
  Changes: Data collection