5OWV

An oligomerised bacterial dynamin pair provides a mechanism for the long-range sensing and tethering of membranes


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.72 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.261 

wwPDB Validation   3D Report Full Report


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Literature

Structural basis for membrane tethering by a bacterial dynamin-like pair.

Liu, J.Noel, J.K.Low, H.H.

(2018) Nat Commun 9: 3345-3345

  • DOI: 10.1038/s41467-018-05523-8
  • Primary Citation of Related Structures:  
    5OWV, 5OXF

  • PubMed Abstract: 
  • Dynamin-like proteins (DLPs) are large GTPases that restructure membrane. DLPs such as the mitofusins form heterotypic oligomers between isoform pairs that bridge and fuse opposing membranes. In bacteria, heterotypic oligomerisation may also be impor ...

    Dynamin-like proteins (DLPs) are large GTPases that restructure membrane. DLPs such as the mitofusins form heterotypic oligomers between isoform pairs that bridge and fuse opposing membranes. In bacteria, heterotypic oligomerisation may also be important for membrane remodelling as most DLP genes are paired within operons. How DLPs tether opposing membranes is unknown. Here we show the crystal structure of a DLP heterotypic pair from the pathogen Campylobacter jejuni. A 2:2 stoichiometric tetramer is observed where heterodimers, conjoined by a random coil linker, assemble back-to-back to form a tripartite DLP chain with extreme flexibility. In vitro, tetramerisation triggers GTPase activity and induces lipid binding. Liposomes are readily tethered and form tubes at high tetramer concentration. Our results provide a direct mechanism for the long-range binding and bridging of opposing membranes by a bacterial DLP pair. They also provide broad mechanistic and structural insights that are relevant to other heterotypic DLP complexes.


    Organizational Affiliation

    Department of Life Sciences, Imperial College, London, SW7 2AZ, UK. h.low@imperial.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GTP-binding proteinAB732Campylobacter jejuniMutation(s): 0 
Gene Names: BKM79_02020
Find proteins for Q0PB99 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0PB99 
Go to UniProtKB:  Q0PB99
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
GTP-binding proteinCD614Campylobacter jejuniMutation(s): 0 
Gene Names: BKM79_02025
Find proteins for Q0PB98 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0PB98 
Go to UniProtKB:  Q0PB98
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.72 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.259 
  • R-Value Observed: 0.261 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.59α = 90
b = 226.058β = 90
c = 317.892γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom097328/Z/11/Z

Revision History 

  • Version 1.0: 2018-09-05
    Type: Initial release
  • Version 1.1: 2019-10-16
    Changes: Data collection