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 

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This is version 2.1 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: 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 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENDOBREVINA65Rattus norvegicusMutation(s): 0 
Gene Names: Vamp8
UniProt
Find proteins for Q9WUF4 (Rattus norvegicus)
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Go to UniProtKB:  Q9WUF4
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SYNTAXIN 7B65Mus musculusMutation(s): 0 
Gene Names: Stx7Syn7
UniProt & NIH Common Fund Data Resources
Find proteins for O70439 (Mus musculus)
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Go to UniProtKB:  O70439
IMPC:  MGI:1858210
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
VESICLE TRANSPORT V-SNARE PROTEIN VTI1-LIKE 1C65Mus musculusMutation(s): 0 
Gene Names: Vti1bVti1l1
UniProt
Find proteins for O88384 (Mus musculus)
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Go to UniProtKB:  O88384
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
SYNTAXIN 8D65Rattus norvegicusMutation(s): 0 
Gene Names: Stx8
UniProt
Find proteins for Q9Z2Q7 (Rattus norvegicus)
Explore Q9Z2Q7 
Go to UniProtKB:  Q9Z2Q7
Protein Feature View
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  • 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

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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