6WVW

Crystal structure of the R59P-SNAP25 containing SNARE complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.200 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Role of Aberrant Spontaneous Neurotransmission in SNAP25-Associated Encephalopathies.

Alten, B.Zhou, Q.Shin, O.H.Esquivies, L.Lin, P.Y.White, K.I.Sun, R.Chung, W.K.Monteggia, L.M.Brunger, A.T.Kavalali, E.T.

(2021) Neuron 109: 59-72.e5

  • DOI: https://doi.org/10.1016/j.neuron.2020.10.012
  • Primary Citation of Related Structures:  
    6WVW

  • PubMed Abstract: 

    SNARE (soluble N-ethylmaleimide sensitive factor attachment protein receptor) complex, composed of synaptobrevin, syntaxin, and SNAP25, forms the essential fusion machinery for neurotransmitter release. Recent studies have reported several mutations in the gene encoding SNAP25 as a causative factor for developmental and epileptic encephalopathies of infancy and childhood with diverse clinical manifestations. However, it remains unclear how SNAP25 mutations give rise to these disorders. Here, we show that although structurally clustered mutations in SNAP25 give rise to related synaptic transmission phenotypes, specific alterations in spontaneous neurotransmitter release are a key factor to account for disease heterogeneity. Importantly, we identified a single mutation that augments spontaneous release without altering evoked release, suggesting that aberrant spontaneous release is sufficient to cause disease in humans.


  • Organizational Affiliation

    Department of Pharmacology, Vanderbilt University, Nashville, TN 37240-7933, USA; Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37240-7933, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vesicle-associated membrane protein 2
A, E
63Rattus norvegicusMutation(s): 0 
Gene Names: Vamp2Syb2
UniProt
Find proteins for P63045 (Rattus norvegicus)
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Go to UniProtKB:  P63045
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UniProt GroupP63045
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Syntaxin-1A
B, F
66Rattus norvegicusMutation(s): 0 
Gene Names: Stx1aSap
UniProt
Find proteins for P32851 (Rattus norvegicus)
Explore P32851 
Go to UniProtKB:  P32851
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UniProt GroupP32851
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Synaptosomal-associated protein 25
C, G
74Rattus norvegicusMutation(s): 1 
Gene Names: Snap25Snap
UniProt
Find proteins for P60881 (Rattus norvegicus)
Explore P60881 
Go to UniProtKB:  P60881
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UniProt GroupP60881
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Synaptosomal-associated protein 25
D, H
64Rattus norvegicusMutation(s): 0 
Gene Names: Snap25Snap
UniProt
Find proteins for P60881 (Rattus norvegicus)
Explore P60881 
Go to UniProtKB:  P60881
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP60881
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.200 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.761α = 90
b = 45.899β = 94.41
c = 109.066γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)United StatesR37MH63105
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)United StatesK99MH113764
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)United StatesR00MH113764

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-17
    Type: Initial release
  • Version 1.1: 2023-10-18
    Changes: Data collection, Database references, Refinement description