Mitofusin domain HR2 V686M/I708M mutant

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.241 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Structural basis of mitochondrial tethering by mitofusin complexes

Koshiba, T.Detmer, S.A.Kaiser, J.T.Chen, H.McCaffery, J.M.Chan, D.C.

(2004) Science 305: 858-862

  • DOI: https://doi.org/10.1126/science.1099793
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Vesicle fusion involves vesicle tethering, docking, and membrane merger. We show that mitofusin, an integral mitochondrial membrane protein, is required on adjacent mitochondria to mediate fusion, which indicates that mitofusin complexes act in trans (that is, between adjacent mitochondria). A heptad repeat region (HR2) mediates mitofusin oligomerization by assembling a dimeric, antiparallel coiled coil. The transmembrane segments are located at opposite ends of the 95 angstrom coiled coil and provide a mechanism for organelle tethering. Consistent with this proposal, truncated mitofusin, in an HR2-dependent manner, causes mitochondria to become apposed with a uniform gap. Our results suggest that HR2 functions as a mitochondrial tether before fusion.

  • Organizational Affiliation

    Division of Biology, California Institute of Technology, 1200 East California Boulevard, MC114-96, Pasadena, CA 91125, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
mitofusin 196Mus musculusMutation(s): 2 
Gene Names: MFN1
UniProt & NIH Common Fund Data Resources
Find proteins for Q811U4 (Mus musculus)
Explore Q811U4 
Go to UniProtKB:  Q811U4
IMPC:  MGI:1914664
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ811U4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.241 
  • Space Group: F 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162.83α = 90
b = 162.83β = 90
c = 162.83γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references
  • Version 1.4: 2024-02-14
    Changes: Data collection