3RL0

Truncated SNARE complex with complexin (P1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.345 
  • R-Value Work: 0.306 
  • R-Value Observed: 0.308 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Complexin cross-links prefusion SNAREs into a zigzag array.

Kummel, D.Krishnakumar, S.S.Radoff, D.T.Li, F.Giraudo, C.G.Pincet, F.Rothman, J.E.Reinisch, K.M.

(2011) Nat Struct Mol Biol 18: 927-933

  • DOI: https://doi.org/10.1038/nsmb.2101
  • Primary Citation of Related Structures:  
    3RK2, 3RK3, 3RL0

  • PubMed Abstract: 
  • Complexin prevents SNAREs from releasing neurotransmitters until an action potential arrives at the synapse. To understand the mechanism for this inhibition, we determined the structure of complexin bound to a mimetic of a prefusion SNAREpin lacking the portion of the v-SNARE that zippers last to trigger fusion ...

    Complexin prevents SNAREs from releasing neurotransmitters until an action potential arrives at the synapse. To understand the mechanism for this inhibition, we determined the structure of complexin bound to a mimetic of a prefusion SNAREpin lacking the portion of the v-SNARE that zippers last to trigger fusion. The 'central helix' of complexin is anchored to one SNARE complex, while its 'accessory helix' extends away at ~45° and bridges to a second complex, occupying the vacant v-SNARE binding site to inhibit fusion. We expected the accessory helix to compete with the v-SNARE for t-SNARE binding but found instead that the interaction occurs intermolecularly. Thus, complexin organizes the SNAREs into a zigzag topology that, when interposed between the vesicle and plasma membranes, is incompatible with fusion.


    Organizational Affiliation

    Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Vesicle-associated membrane protein 2
A,
CA [auth c],
E,
I,
M,
Q,
U,
Y
37Homo sapiensMutation(s): 0 
Gene Names: VAMP2SYB2
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Find proteins for P63027 (Homo sapiens)
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PHAROS:  P63027
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UniProt GroupP63027
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Syntaxin-1A
B,
DA [auth d],
F,
J,
N,
R,
V,
Z
65Rattus norvegicusMutation(s): 0 
Gene Names: Stx1aSap
UniProt
Find proteins for P32851 (Rattus norvegicus)
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UniProt GroupP32851
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptosomal-associated protein 2581Homo sapiensMutation(s): 0 
Gene Names: SNAP25SNAP
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Find proteins for P60880 (Homo sapiens)
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PHAROS:  P60880
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UniProt GroupP60880
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptosomal-associated protein 2565Homo sapiensMutation(s): 0 
Gene Names: SNAP25SNAP
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Find proteins for P60880 (Homo sapiens)
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Complexin-163Homo sapiensMutation(s): 3 
Gene Names: CPLX1
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Find proteins for O14810 (Homo sapiens)
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PHAROS:  O14810
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UniProt GroupO14810
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
GA [auth g],
HA [auth h],
IA [auth i],
JA [auth j],
KA [auth k],
GA [auth g],
HA [auth h],
IA [auth i],
JA [auth j],
KA [auth k],
LA [auth l],
MA [auth m],
NA [auth n]
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.345 
  • R-Value Work: 0.306 
  • R-Value Observed: 0.308 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.745α = 107.49
b = 127.357β = 90.01
c = 142.725γ = 90.05
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-07-27
    Type: Initial release
  • Version 1.1: 2011-08-24
    Changes: Database references