1T3J

Mitofusin domain HR2 V686M/I708M mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.241 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

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: 10.1126/science.1099793

  • 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 ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
mitofusin 1
A
96Mus musculusMutation(s): 2 
Gene Names: Mfn1
EC: 3.6.5.-
Find proteins for Q811U4 (Mus musculus)
Go to UniProtKB:  Q811U4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.241 
  • Space Group: F 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 162.830α = 90.00
b = 162.830β = 90.00
c = 162.830γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
MLPHAREphasing
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance