2C08

Rat endophilin A1 BAR domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.280 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Mechanism of Endophilin N-Bar Domain-Mediated Membrane Curvature.

Gallop, J.L.Jao, C.C.Kent, H.M.Butler, P.J.Evans, P.R.Langen, R.Mcmahon, H.T.

(2006) EMBO J 25: 2898

  • DOI: 10.1038/sj.emboj.7601174
  • Primary Citation of Related Structures:  
    2C08

  • PubMed Abstract: 
  • Endophilin-A1 is a BAR domain-containing protein enriched at synapses and is implicated in synaptic vesicle endocytosis. It binds to dynamin and synaptojanin via a C-terminal SH3 domain. We examine the mechanism by which the BAR domain and an N-terminal amphipathic helix, which folds upon membrane binding, work as a functional unit (the N-BAR domain) to promote dimerisation and membrane curvature generation ...

    Endophilin-A1 is a BAR domain-containing protein enriched at synapses and is implicated in synaptic vesicle endocytosis. It binds to dynamin and synaptojanin via a C-terminal SH3 domain. We examine the mechanism by which the BAR domain and an N-terminal amphipathic helix, which folds upon membrane binding, work as a functional unit (the N-BAR domain) to promote dimerisation and membrane curvature generation. By electron paramagnetic resonance spectroscopy, we show that this amphipathic helix is peripherally bound in the plane of the membrane, with the midpoint of insertion aligned with the phosphate level of headgroups. This places the helix in an optimal position to effect membrane curvature generation. We solved the crystal structure of rat endophilin-A1 BAR domain and examined a distinctive insert protruding from the membrane interaction face. This insert is predicted to form an additional amphipathic helix and is important for curvature generation. Its presence defines an endophilin/nadrin subclass of BAR domains. We propose that N-BAR domains function as low-affinity dimers regulating binding partner recruitment to areas of high membrane curvature.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SH3-CONTAINING GRB2-LIKE PROTEIN 2A204Rattus norvegicusMutation(s): 0 
Gene Names: Sh3gl2Sh3d2aSh3p4
EC: 2.3.1
Find proteins for O35179 (Rattus norvegicus)
Explore O35179 
Go to UniProtKB:  O35179
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.280 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.578α = 90
b = 126.578β = 90
c = 101.226γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
SHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-14
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-29
    Changes: Data collection, Derived calculations, Experimental preparation, Other