2J3S

Crystal structure of the human filamin A Ig domains 19 to 21


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.257 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of Three Tandem Filamin Domains Reveals Auto-Inhibition of Ligand-Binding.

Lad, Y.Kiema, T.-R.Jiang, P.Pentikanen, O.T.Coles, C.H.Campbell, I.D.Calderwood, D.A.Ylanne, J.

(2007) EMBO J 26: 3993

  • DOI: https://doi.org/10.1038/sj.emboj.7601827
  • Primary Citation of Related Structures:  
    2J3S

  • PubMed Abstract: 

    Human filamins are large actin-crosslinking proteins composed of an N-terminal actin-binding domain followed by 24 Ig-like domains (IgFLNs), which interact with numerous transmembrane receptors and cytosolic signaling proteins. Here we report the 2.5 A resolution structure of a three-domain fragment of human filamin A (IgFLNa19-21). The structure reveals an unexpected domain arrangement, with IgFLNa20 partially unfolded bringing IgFLNa21 into close proximity to IgFLNa19. Notably the N-terminus of IgFLNa20 forms a beta-strand that associates with the CD face of IgFLNa21 and occupies the binding site for integrin adhesion receptors. Disruption of this IgFLNa20-IgFLNa21 interaction enhances filamin binding to integrin beta-tails. Structural and functional analysis of other IgFLN domains suggests that auto-inhibition by adjacent IgFLN domains may be a general mechanism controlling filamin-ligand interactions. This can explain the increased integrin binding of filamin splice variants and provides a mechanism by which ligand binding might impact filamin structure.


  • Organizational Affiliation

    Department of Pharmacology and Interdepartmental Program in Vascular Biology and Transplantation, Yale University School of Medicine, New Haven, CT 06520, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FILAMIN-A
A, B
288Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P21333 (Homo sapiens)
Go to UniProtKB:  P21333
PHAROS:  P21333
GTEx:  ENSG00000196924 
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.257 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.28α = 90
b = 78.39β = 90
c = 229.04γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description