5TZM

59th Ig domain of human obscurin (OBSCN Ig59)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.177 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

A novel FLNC frameshift and an OBSCN variant in a family with distal muscular dystrophy.

Rossi, D.Palmio, J.Evila, A.Galli, L.Barone, V.Caldwell, T.A.Policke, R.A.Aldkheil, E.Berndsen, C.E.Wright, N.T.Malfatti, E.Brochier, G.Pierantozzi, E.Jordanova, A.Guergueltcheva, V.Romero, N.B.Hackman, P.Eymard, B.Udd, B.Sorrentino, V.

(2017) PLoS ONE 12: e0186642-e0186642

  • DOI: 10.1371/journal.pone.0186642

  • PubMed Abstract: 
  • A novel FLNC c.5161delG (p.Gly1722ValfsTer61) mutation was identified in two members of a French family affected by distal myopathy and in one healthy relative. This FLNC c.5161delG mutation is one nucleotide away from a previously reported FLNC muta ...

    A novel FLNC c.5161delG (p.Gly1722ValfsTer61) mutation was identified in two members of a French family affected by distal myopathy and in one healthy relative. This FLNC c.5161delG mutation is one nucleotide away from a previously reported FLNC mutation (c.5160delC) that was identified in patients and in asymptomatic carriers of three Bulgarian families with distal muscular dystrophy, indicating a low penetrance of the FLNC frameshift mutations. Given these similarities, we believe that the two FLNC mutations alone can be causative of distal myopathy without full penetrance. Moreover, comparative analysis of the clinical manifestations indicates that patients of the French family show an earlier onset and a complete segregation of the disease. As a possible explanation of this, the two French patients also carry a OBSCN c.13330C>T (p.Arg4444Trp) mutation. The p.Arg4444Trp variant is localized within the OBSCN Ig59 domain that, together with Ig58, binds to the ZIg9/ZIg10 domains of titin at Z-disks. Structural and functional studies indicate that this OBSCN p.Arg4444Trp mutation decreases titin binding by ~15-fold. On this line, we suggest that the combination of the OBSCN p.Arg4444Trp variant and of the FLNC c.5161delG mutation, can cooperatively affect myofibril stability and increase the penetrance of muscular dystrophy in the French family.


    Organizational Affiliation

    Molecular Medicine Section, Department of Molecular and Developmental Medicine, University of Siena and Azienda Ospedaliera Universitaria Senese, Siena, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Obscurin
A
100Homo sapiensMutation(s): 1 
Gene Names: OBSCN (KIAA1556, KIAA1639)
EC: 2.7.11.1
Find proteins for Q5VST9 (Homo sapiens)
Go to Gene View: OBSCN
Go to UniProtKB:  Q5VST9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.177 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.164 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 60.980α = 90.00
b = 60.980β = 90.00
c = 47.560γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHASERphasing
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research CorporationUnited States22450
National Science Foundation (United States)United StatesCHE-1062629

Revision History 

  • Version 1.0: 2017-11-08
    Type: Initial release