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- PDB-1n7s: High Resolution Structure of a Truncated Neuronal SNARE Complex -

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Basic information

Entry
Database: PDB / ID: 1n7s
TitleHigh Resolution Structure of a Truncated Neuronal SNARE Complex
Components
  • (SNAP-25A) x 2
  • Syntaxin 1A
  • vesicle-associated membrane protein 2
KeywordsTRANSPORT PROTEIN / neuronal SNARE protein complex / four helix bundle
Function / homology
Function and homology information


exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / BLOC-1 complex / myosin head/neck binding / Lysosome Vesicle Biogenesis / zymogen granule membrane / storage vacuole / synaptic vesicle fusion to presynaptic active zone membrane / Other interleukin signaling ...exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / BLOC-1 complex / myosin head/neck binding / Lysosome Vesicle Biogenesis / zymogen granule membrane / storage vacuole / synaptic vesicle fusion to presynaptic active zone membrane / Other interleukin signaling / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / presynaptic dense core vesicle exocytosis / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / extrinsic component of presynaptic membrane / calcium ion-regulated exocytosis of neurotransmitter / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / GABA synthesis, release, reuptake and degradation / positive regulation of norepinephrine secretion / positive regulation of catecholamine secretion / Dopamine Neurotransmitter Release Cycle / synaptic vesicle docking / eosinophil degranulation / Golgi Associated Vesicle Biogenesis / regulation of synaptic vesicle priming / regulated exocytosis / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / vesicle-mediated transport in synapse / positive regulation of intracellular protein transport / regulation of establishment of protein localization / positive regulation of calcium ion-dependent exocytosis / ribbon synapse / vesicle docking / regulation of vesicle-mediated transport / regulation of exocytosis / Cargo recognition for clathrin-mediated endocytosis / secretion by cell / chloride channel inhibitor activity / Clathrin-mediated endocytosis / SNARE complex / SNAP receptor activity / calcium-ion regulated exocytosis / vesicle fusion / actomyosin / hormone secretion / LGI-ADAM interactions / positive regulation of hormone secretion / neuron projection terminus / Golgi to plasma membrane protein transport / ATP-dependent protein binding / neurotransmitter secretion / protein localization to membrane / clathrin-coated vesicle / syntaxin binding / syntaxin-1 binding / regulation of synaptic vesicle recycling / insulin secretion / endosomal transport / Neutrophil degranulation / regulation of synapse assembly / SNARE complex assembly / positive regulation of neurotransmitter secretion / neurotransmitter transport / myosin binding / response to gravity / regulation of neuron projection development / synaptic vesicle priming / exocytosis / modulation of excitatory postsynaptic potential / associative learning / protein sumoylation / positive regulation of exocytosis / synaptic vesicle exocytosis / voltage-gated potassium channel activity / synaptic vesicle endocytosis / positive regulation of excitatory postsynaptic potential / long-term memory / postsynaptic cytosol / response to glucose / axonal growth cone / calcium channel inhibitor activity / vesicle-mediated transport / presynaptic active zone membrane / somatodendritic compartment / voltage-gated potassium channel complex / endomembrane system / photoreceptor inner segment / acrosomal vesicle / axonogenesis / cytoplasmic vesicle membrane / secretory granule / SNARE binding / filopodium / intracellular protein transport / locomotory behavior / trans-Golgi network / establishment of localization in cell
Similarity search - Function
Single alpha-helices involved in coiled-coils or other helix-helix interfaces - #110 / Synaptobrevin/Vesicle-associated membrane protein / Synaptobrevin signature. / Synaptosomal-associated protein 25 / SNAP-25 domain / Synaptobrevin-like / SNAP-25 family / Synaptobrevin / v-SNARE, coiled-coil homology domain / v-SNARE coiled-coil homology domain profile. ...Single alpha-helices involved in coiled-coils or other helix-helix interfaces - #110 / Synaptobrevin/Vesicle-associated membrane protein / Synaptobrevin signature. / Synaptosomal-associated protein 25 / SNAP-25 domain / Synaptobrevin-like / SNAP-25 family / Synaptobrevin / v-SNARE, coiled-coil homology domain / v-SNARE coiled-coil homology domain profile. / Syntaxin / Syntaxin N-terminal domain / Syntaxin, N-terminal domain / SNARE domain / Syntaxin / Syntaxin/epimorphin, conserved site / Syntaxin / epimorphin family signature. / SNARE / Helical region found in SNAREs / t-SNARE coiled-coil homology domain profile. / Target SNARE coiled-coil homology domain / Single alpha-helices involved in coiled-coils or other helix-helix interfaces / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
Syntaxin-1A / Synaptosomal-associated protein 25 / Vesicle-associated membrane protein 2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.45 Å
AuthorsErnst, J.A. / Brunger, A.T.
CitationJournal: J.Biol.Chem. / Year: 2003
Title: High Resolution Structure, Stability, and Synaptotagmin Binding of a Truncated Neuronal SNARE Complex
Authors: Ernst, J.A. / Brunger, A.T.
History
DepositionNov 16, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 27, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jan 31, 2018Group: Experimental preparation / Category: exptl_crystal_grow / Item: _exptl_crystal_grow.temp
Revision 1.4Feb 14, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr1_symmetry / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn.ptnr2_symmetry / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: vesicle-associated membrane protein 2
B: Syntaxin 1A
C: SNAP-25A
D: SNAP-25A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,0979
Polymers31,7404
Non-polymers3575
Water5,801322
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area12500 Å2
ΔGint-140 kcal/mol
Surface area15120 Å2
MethodPISA
Unit cell
Length a, b, c (Å)39.767, 51.750, 132.938
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 4 types, 4 molecules ABCD

#1: Protein vesicle-associated membrane protein 2 / Synaptobrevin 2 (vesicle-associated membrane protein / VAMP-2)


Mass: 7231.061 Da / Num. of mol.: 1 / Fragment: SBc
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: pET28a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P63045
#2: Protein Syntaxin 1A / Synaptotagmin associated 35 kDa protein / P35A / Neuron-specific antigen HPC-1


Mass: 7850.891 Da / Num. of mol.: 1 / Fragment: SXc
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: pET28a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P32851
#3: Protein SNAP-25A


Mass: 9174.243 Da / Num. of mol.: 1 / Fragment: SN1b
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: pET28a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P60881
#4: Protein SNAP-25A


Mass: 7484.302 Da / Num. of mol.: 1 / Fragment: SN2c
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Plasmid: pET28a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P60881

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Non-polymers , 3 types, 327 molecules

#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ca
#6: Chemical ChemComp-MPD / (4S)-2-METHYL-2,4-PENTANEDIOL


Mass: 118.174 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H14O2 / Comment: precipitant*YM
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 322 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 1.92 Å3/Da / Density % sol: 35.37 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 5.5
Details: MPD, CaCl2, MES, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 4.0K
Crystal grow
*PLUS
Temperature: 4 and 20 ℃ / pH: 7.8
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formulaDetails
19 mg/mlprotein1drop
2200 mM1dropNaCl
310 mMHEPES1droppH7.8
45 mMdithiothreitol1drop
515-20 %MPD1reservoir
675-125 mM1reservoirCaCl2
750 mMMES1reservoirpH5.0-6.0

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.2.1 / Wavelength: 0.9 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Sep 6, 2002
RadiationMonochromator: Double Crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9 Å / Relative weight: 1
ReflectionResolution: 1.45→34.14 Å / Num. all: 49616 / Num. obs: 48574 / % possible obs: 97.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5 % / Biso Wilson estimate: 20.5 Å2 / Rmerge(I) obs: 0.69 / Rsym value: 0.69 / Net I/σ(I): 20.4
Reflection shellResolution: 1.45→1.5 Å / Redundancy: 5 % / Rmerge(I) obs: 0.439 / Mean I/σ(I) obs: 3.5 / Num. unique all: 4310 / Rsym value: 0.439 / % possible all: 88.4
Reflection shell
*PLUS
% possible obs: 88.4 % / Num. unique obs: 4310

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Processing

Software
NameVersionClassification
HKL-2000data collection
SCALEPACKdata scaling
CNS1.1refinement
HKL-2000data reduction
CNS1.1phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1SFC

1sfc


Resolution: 1.45→34.13 Å / Rfactor Rfree error: 0.003 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.224 4783 9.9 %RANDOM
Rwork0.198 ---
all0.201 49616 --
obs0.201 48509 97.6 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 50.2806 Å2 / ksol: 0.407671 e/Å3
Displacement parametersBiso mean: 27.8 Å2
Baniso -1Baniso -2Baniso -3
1--5.4 Å20 Å20 Å2
2--9.14 Å20 Å2
3----3.73 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.19 Å0.17 Å
Luzzati d res low-5 Å
Luzzati sigma a0.19 Å0.2 Å
Refinement stepCycle: LAST / Resolution: 1.45→34.13 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2206 0 3 338 2547
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_angle_deg1
X-RAY DIFFRACTIONc_dihedral_angle_d14.3
X-RAY DIFFRACTIONc_improper_angle_d0.72
X-RAY DIFFRACTIONc_mcbond_it2.011.5
X-RAY DIFFRACTIONc_mcangle_it2.712
X-RAY DIFFRACTIONc_scbond_it4.742
X-RAY DIFFRACTIONc_scangle_it7.252.5
LS refinement shellResolution: 1.45→1.54 Å / Rfactor Rfree error: 0.012 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.321 699 9.6 %
Rwork0.306 6599 -
obs-7298 89.6 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2ION.PARAMWATER.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMION.TOP
X-RAY DIFFRACTION4MPD.PARAMMPD.TOP
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg14.3
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.72

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