6JFL

Nucleotide-free Mitofusin2 (MFN2)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structural insights of human mitofusin-2 into mitochondrial fusion and CMT2A onset.

Li, Y.J.Cao, Y.L.Feng, J.X.Qi, Y.Meng, S.Yang, J.F.Zhong, Y.T.Kang, S.Chen, X.Lan, L.Luo, L.Yu, B.Chen, S.Chan, D.C.Hu, J.Gao, S.

(2019) Nat Commun 10: 4914-4914

  • DOI: 10.1038/s41467-019-12912-0
  • Primary Citation of Related Structures:  
    6JFK, 6JFM, 6JFL

  • PubMed Abstract: 
  • Mitofusin-2 (MFN2) is a dynamin-like GTPase that plays a central role in regulating mitochondrial fusion and cell metabolism. Mutations in MFN2 cause the neurodegenerative disease Charcot-Marie-Tooth type 2A (CMT2A). The molecular basis underlying the physiological and pathological relevance of MFN2 is unclear ...

    Mitofusin-2 (MFN2) is a dynamin-like GTPase that plays a central role in regulating mitochondrial fusion and cell metabolism. Mutations in MFN2 cause the neurodegenerative disease Charcot-Marie-Tooth type 2A (CMT2A). The molecular basis underlying the physiological and pathological relevance of MFN2 is unclear. Here, we present crystal structures of truncated human MFN2 in different nucleotide-loading states. Unlike other dynamin superfamily members including MFN1, MFN2 forms sustained dimers even after GTP hydrolysis via the GTPase domain (G) interface, which accounts for its high membrane-tethering efficiency. The biochemical discrepancy between human MFN2 and MFN1 largely derives from a primate-only single amino acid variance. MFN2 and MFN1 can form heterodimers via the G interface in a nucleotide-dependent manner. CMT2A-related mutations, mapping to different functional zones of MFN2, lead to changes in GTP hydrolysis and homo/hetero-association ability. Our study provides fundamental insight into how mitofusins mediate mitochondrial fusion and the ways their disruptions cause disease.


    Organizational Affiliation

    Guangzhou Regenerative Medicine and Health Guangdong Laboratory, 510530, Guangzhou, China. gaosong@sysucc.org.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitofusin-2,cDNA FLJ57997, highly similar to Transmembrane GTPase MFN2A, B, C, D438Homo sapiensMutation(s): 0 
Gene Names: MFN2CPRP1KIAA0214
EC: 3.6.5
UniProt & NIH Common Fund Data Resources
Find proteins for O95140 (Homo sapiens)
Explore O95140 
Go to UniProtKB:  O95140
PHAROS:  O95140
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth C]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.482α = 90
b = 128.424β = 106.27
c = 91.329γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina--

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-13
    Type: Initial release