2N1T

Dynamic binding mode of a synaptotagmin-1-SNARE complex in solution


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 10000 
  • Conformers Submitted: 
  • Selection Criteria: Contribution to fit PCS data 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Dynamic binding mode of a Synaptotagmin-1-SNARE complex in solution.

Brewer, K.D.Bacaj, T.Cavalli, A.Camilloni, C.Swarbrick, J.D.Liu, J.Zhou, A.Zhou, P.Barlow, N.Xu, J.Seven, A.B.Prinslow, E.A.Voleti, R.Haussinger, D.Bonvin, A.M.Tomchick, D.R.Vendruscolo, M.Graham, B.Sudhof, T.C.Rizo, J.

(2015) Nat Struct Mol Biol 22: 555-564

  • DOI: 10.1038/nsmb.3035
  • Primary Citation of Related Structures:  
    2N1T

  • PubMed Abstract: 
  • Rapid neurotransmitter release depends on the Ca2+ sensor Synaptotagmin-1 (Syt1) and the SNARE complex formed by synaptobrevin, syntaxin-1 and SNAP-25. How Syt1 triggers release has been unclear, partly because elucidating high-resolution structures of Syt1-SNARE complexes has been challenging ...

    Rapid neurotransmitter release depends on the Ca2+ sensor Synaptotagmin-1 (Syt1) and the SNARE complex formed by synaptobrevin, syntaxin-1 and SNAP-25. How Syt1 triggers release has been unclear, partly because elucidating high-resolution structures of Syt1-SNARE complexes has been challenging. An NMR approach based on lanthanide-induced pseudocontact shifts now reveals a dynamic binding mode in which basic residues in the concave side of the Syt1 C2B-domain β-sandwich interact with a polyacidic region of the SNARE complex formed by syntaxin-1 and SNAP-25. The physiological relevance of this dynamic structural model is supported by mutations in basic residues of Syt1 that markedly impair SNARE-complex binding in vitro and Syt1 function in neurons. Mutations with milder effects on binding have correspondingly milder effects on Syt1 function. Our results support a model whereby dynamic interaction facilitates cooperation between Syt1 and the SNAREs in inducing membrane fusion.


    Organizational Affiliation

    1] Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, Texas, USA. [2] Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas, USA. [3] Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Vesicle-associated membrane protein 2A69Rattus norvegicusMutation(s): 0 
Gene Names: Syb2Vamp2
Membrane Entity: Yes 
UniProt
Find proteins for P63045 (Rattus norvegicus)
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Syntaxin-1AB72Rattus norvegicusMutation(s): 0 
Gene Names: SapStx1a
Membrane Entity: Yes 
UniProt
Find proteins for P32851 (Rattus norvegicus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptosomal-associated protein 25C77Homo sapiensMutation(s): 0 
Gene Names: SNAPSNAP25SNAP-25A
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P60880 (Homo sapiens)
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PHAROS:  P60880
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptosomal-associated protein 25D74Homo sapiensMutation(s): 0 
Gene Names: SNAPSNAP25SNAP-25A
Membrane Entity: Yes 
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptotagmin-1E156Homo sapiensMutation(s): 0 
Gene Names: SVP65SYTSYT1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P21579 (Homo sapiens)
Explore P21579 
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PHAROS:  P21579
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 10000 
  • Conformers Submitted: 
  • Selection Criteria: Contribution to fit PCS data 
  • OLDERADO: 2N1T Olderado

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-03
    Type: Initial release
  • Version 1.1: 2015-06-17
    Changes: Database references
  • Version 1.2: 2015-07-22
    Changes: Database references