6EW1

Crystal structure of the Filamin A Ig-like domains 3-5 mutant P637Q


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.246 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Non-syndromic Mitral Valve Dysplasia Mutation Changes the Force Resilience and Interaction of Human Filamin A.

Haataja, T.J.K.Bernardi, R.C.Lecointe, S.Capoulade, R.Merot, J.Pentikainen, U.

(2019) Structure 27: 102-112.e4

  • DOI: 10.1016/j.str.2018.09.007
  • Primary Citation of Related Structures:  
    6EW1

  • PubMed Abstract: 
  • Filamin A (FLNa), expressed in endocardial endothelia during fetal valve morphogenesis, is key in cardiac development. Missense mutations in FLNa cause non-syndromic mitral valve dysplasia (FLNA-MVD). Here, we aimed to reveal the currently unknown underlying molecular mechanism behind FLNA-MVD caused by the FLNa P637Q mutation ...

    Filamin A (FLNa), expressed in endocardial endothelia during fetal valve morphogenesis, is key in cardiac development. Missense mutations in FLNa cause non-syndromic mitral valve dysplasia (FLNA-MVD). Here, we aimed to reveal the currently unknown underlying molecular mechanism behind FLNA-MVD caused by the FLNa P637Q mutation. The solved crystal structure of the FLNa3-5 P637Q revealed that this mutation causes only minor structural changes close to mutation site. These changes were observed to significantly affect FLNa's ability to transmit cellular force and to interact with its binding partner. The performed steered molecular dynamics simulations showed that significantly lower forces are needed to split domains 4 and 5 in FLNA-MVD than with wild-type FLNa. The P637Q mutation was also observed to interfere with FLNa's interactions with the protein tyrosine phosphatase PTPN12. Our results provide a crucial step toward understanding the molecular bases behind FLNA-MVD, which is critical for the development of drug-based therapeutics.


    Organizational Affiliation

    Department of Biological and Environmental Science and Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Institute of Biomedicine, University of Turku, 20520 Turku, Finland; Turku Centre for Biotechnology, University of Turku, 20520 Turku, Finland. Electronic address: ulla.pentikainen@utu.fi.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Filamin-AA291Homo sapiensMutation(s): 1 
Gene Names: FLNAFLNFLN1
UniProt & NIH Common Fund Data Resources
Find proteins for P21333 (Homo sapiens)
Explore P21333 
Go to UniProtKB:  P21333
PHAROS:  P21333
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.246 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.721α = 90
b = 60.721β = 90
c = 163.178γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Academy of FinlandFinland283481

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-31
    Type: Initial release
  • Version 1.1: 2019-01-16
    Changes: Data collection, Database references