6QBF

Crystal structure of the pathological D187N variant of calcium-free human gelsolin.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.221 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The structure of N184K amyloidogenic variant of gelsolin highlights the role of the H-bond network for protein stability and aggregation properties.

de Rosa, M.Barbiroli, A.Boni, F.Scalone, E.Mattioni, D.Vanoni, M.A.Patrone, M.Bollati, M.Mastrangelo, E.Giorgino, T.Milani, M.

(2020) Eur Biophys J 49: 11-19

  • DOI: https://doi.org/10.1007/s00249-019-01409-9
  • Primary Citation of Related Structures:  
    6Q9R, 6Q9Z, 6QBF

  • PubMed Abstract: 

    Mutations in the gelsolin protein are responsible for a rare conformational disease known as AGel amyloidosis. Four of these mutations are hosted by the second domain of the protein (G2): D187N/Y, G167R and N184K. The impact of the latter has been so far evaluated only by studies on the isolated G2. Here we report the characterization of full-length gelsolin carrying the N184K mutation and compare the findings with those obtained on the wild type and the other variants. The crystallographic structure of the N184K variant in the Ca 2+ -free conformation shows remarkable similarities with the wild type protein. Only minimal local rearrangements can be observed and the mutant is as efficient as the wild type in severing filamentous actin. However, the thermal stability of the pathological variant is compromised in the Ca 2+ -free conditions. These data suggest that the N to K substitution causes a local disruption of the H-bond network in the core of the G2 domain. Such a subtle rearrangement of the connections does not lead to significant conformational changes but severely affects the stability of the protein.


  • Organizational Affiliation

    Istituto di Biofisica, Consiglio Nazionale delle Ricerche, via Celoria 26, 20133, Milan, Italy. matteo.derosa@cnr.it.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Gelsolin
A, B
778Homo sapiensMutation(s): 1 
Gene Names: GSN
UniProt & NIH Common Fund Data Resources
Find proteins for P06396 (Homo sapiens)
Explore P06396 
Go to UniProtKB:  P06396
PHAROS:  P06396
GTEx:  ENSG00000148180 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06396
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.221 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 169.673α = 90
b = 169.673β = 90
c = 151.089γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DIALSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Amyloidosis FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-27
    Type: Initial release
  • Version 1.1: 2020-02-05
    Changes: Database references
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2024-11-20
    Changes: Structure summary