5CCJ

Crystal structure of the quintuple mutant of the synaptotagmin-1 C2B domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Architecture of the synaptotagmin-SNARE machinery for neuronal exocytosis.

Zhou, Q.Lai, Y.Bacaj, T.Zhao, M.Lyubimov, A.Y.Uervirojnangkoorn, M.Zeldin, O.B.Brewster, A.S.Sauter, N.K.Cohen, A.E.Soltis, S.M.Alonso-Mori, R.Chollet, M.Lemke, H.T.Pfuetzner, R.A.Choi, U.B.Weis, W.I.Diao, J.Sudhof, T.C.Brunger, A.T.

(2015) Nature 525: 62-67

  • DOI: 10.1038/nature14975
  • Primary Citation of Related Structures:  
    5CCH, 5CCG, 5CCJ, 5CCI

  • PubMed Abstract: 
  • Synaptotagmin-1 and neuronal SNARE proteins have central roles in evoked synchronous neurotransmitter release; however, it is unknown how they cooperate to trigger synaptic vesicle fusion. Here we report atomic-resolution crystal structures of Ca(2+)- an ...

    Synaptotagmin-1 and neuronal SNARE proteins have central roles in evoked synchronous neurotransmitter release; however, it is unknown how they cooperate to trigger synaptic vesicle fusion. Here we report atomic-resolution crystal structures of Ca(2+)- and Mg(2+)-bound complexes between synaptotagmin-1 and the neuronal SNARE complex, one of which was determined with diffraction data from an X-ray free-electron laser, leading to an atomic-resolution structure with accurate rotamer assignments for many side chains. The structures reveal several interfaces, including a large, specific, Ca(2+)-independent and conserved interface. Tests of this interface by mutagenesis suggest that it is essential for Ca(2+)-triggered neurotransmitter release in mouse hippocampal neuronal synapses and for Ca(2+)-triggered vesicle fusion in a reconstituted system. We propose that this interface forms before Ca(2+) triggering, moves en bloc as Ca(2+) influx promotes the interactions between synaptotagmin-1 and the plasma membrane, and consequently remodels the membrane to promote fusion, possibly in conjunction with other interfaces.


    Organizational Affiliation

    Departments of Neurology and Neurological Sciences, Photon Science, and Structural Biology, Stanford University, Stanford, California 94305, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptotagmin-1 ABCD152Rattus norvegicusMutation(s): 5 
Gene Names: Syt1
Find proteins for P21707 (Rattus norvegicus)
Explore P21707 
Go to UniProtKB:  P21707
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A, B, C, D
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.92α = 90
b = 107.59β = 90
c = 110.8γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2015-09-02
    Changes: Database references
  • Version 1.2: 2015-09-16
    Changes: Database references