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 9PAF | pdb_00009paf

21bin20S complex (NSF-alphaSNAP-2:1 syntaxin-1a:SNAP-25), non-hydrolyzing, class 6


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6MDM 
Sample
The 21bin20S complex of NSF, alphaSNAP, and the soluble 2:1 binary SNARE complex of syntaxin-1a and SNAP-25
Sample Components
Subcomplex of alphaSNAP, syntaxin-1a, and SNAP-25
Homohexameric NSF
2:1 binary complex of SNAP-25 and syntaxin-1a
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles133977
Reported Resolution (Å)3.82
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (6MDM)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K3 (6k x 4k)GATAN K3 (6k x 4k)GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)31.5636.7635.48
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)1000
Maximum Defocus (nm)3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification22500
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION3.1.4
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONCTFFIND4
CTF CORRECTIONRELION3.1.4
MODEL FITTINGCoot0.9
MODEL FITTINGUCSF ChimeraX
MODEL REFINEMENTPHENIX1.21
INITIAL EULER ASSIGNMENTRELION3.1.4
FINAL EULER ASSIGNMENTcryoSPARC3.2.0
CLASSIFICATIONRELION3.1.4
RECONSTRUCTIONcryoSPARC3.2.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION2817313