4CKG

Helical reconstruction of ACAP1(BAR-PH domain) decorated membrane tubules by cryo-electron microscopy


ELECTRON MICROSCOPY
Sample
BAR-PH DOMAIN OF ACAP1
Specimen Preparation
Sample Aggregation StateHELICAL ARRAY
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsLIQUID ETHANE
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles367
Reported Resolution (Å)15
Resolution Method
Other DetailsPARTICLES WERE CLASSIFIED BY THEIR DIAMETERS, THEN SHRUNK 4 TIMES TO PERFORM SINGLE PARTICLE RECONSTRUCTION USING IHRSR. SUBMISSION BASED ON EXPERIMEN ...PARTICLES WERE CLASSIFIED BY THEIR DIAMETERS, THEN SHRUNK 4 TIMES TO PERFORM SINGLE PARTICLE RECONSTRUCTION USING IHRSR. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2546. (DEPOSITION ID: 12221).
Refinement Type
Symmetry TypeHELICAL
Map-Model Fitting and Refinement
Id1 (4NSW)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement TargetCross-correlation coefficient
Overall B Value
Fitting Procedure
DetailsMETHOD--RIGID BODY FITTING AND MANUALLY DOCKING REFINEMENT PROTOCOL--X-RAY
Data Acquisition
Detector TypeGATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)20
Imaging Experiment1
Date of Experiment2012-07-16
Temperature (Kelvin)98
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)2500
Maximum Defocus (nm)3500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification75000
Calibrated Magnification125418
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging DetailsGOOD MICROGRAPHS (VERIFIED BY HELICAL DIFFRACTION PATTERN) WERE SELECTED MANUALLY. THE ELECTRON DOSE IS 2000 ELECTRON PER NANOMETER SQUARE.
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONIHRSR
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
CTFFIND3