1GL2

Crystal structure of an endosomal SNARE core complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Crystal Structure of the Endosomal Snare Complex Reveals Common Structural Principles of All Snares.

Antonin, W.Fasshauer, D.Becker, S.Jahn, R.Schneider, T.R.

(2001) Nat Struct Biol 9: 107

  • DOI: https://doi.org/10.1038/nsb746
  • Primary Citation of Related Structures:  
    1GL2

  • PubMed Abstract: 

    SNARE proteins are crucial for intracellular membrane fusion in all eukaryotes. These proteins assemble into tight complexes that connect membranes and may induce fusion. The crystal structure of the neuronal core complex is represented by an unusually long bundle of four alpha-helices connected by 16 layers of mostly hydrophobic amino acids. Here we report the 1.9 A resolution crystal structure of an endosomal SNARE core complex containing four SNAREs: syntaxin 7, syntaxin 8, vti1b and endobrevin/VAMP-8. Despite limited sequence homology, the helix alignment and the layer structure of the endosomal complex are remarkably similar to those of the neuronal complex. However, subtle variations are evident that characterize different SNARE subfamilies. We conclude that the structure of the SNARE core complex is an evolutionarily conserved hallmark of all SNARE complexes and is intimately associated with the general role of SNAREs in membrane fusion.


  • Organizational Affiliation

    Department of Neurobiology and Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ENDOBREVIN65Rattus norvegicusMutation(s): 0 
UniProt
Find proteins for Q9WUF4 (Rattus norvegicus)
Explore Q9WUF4 
Go to UniProtKB:  Q9WUF4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WUF4
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
SYNTAXIN 765Mus musculusMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O70439 (Mus musculus)
Explore O70439 
Go to UniProtKB:  O70439
IMPC:  MGI:1858210
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO70439
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
VESICLE TRANSPORT V-SNARE PROTEIN VTI1-LIKE 165Mus musculusMutation(s): 0 
UniProt
Find proteins for O88384 (Mus musculus)
Explore O88384 
Go to UniProtKB:  O88384
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO88384
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
SYNTAXIN 865Rattus norvegicusMutation(s): 0 
UniProt
Find proteins for Q9Z2Q7 (Rattus norvegicus)
Explore Q9Z2Q7 
Go to UniProtKB:  Q9Z2Q7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Z2Q7
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.7α = 90
b = 41.1β = 109.4
c = 51.5γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
EPMRphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-01-15
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2018-05-30
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2019-05-08
    Changes: Data collection, Experimental preparation
  • Version 2.2: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description