5SYG

Cryo-EM reconstruction of zampanolide-bound microtubule


ELECTRON MICROSCOPY
Sample
Ternary complex of zampanolide-stabilized microtubule lattice, alpha-tubulin, and beta-tubulin
Specimen Preparation
Sample Aggregation StateHELICAL ARRAY
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsBlot for 4 seconds, blot force 10, before plunging into liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles17069
Reported Resolution (Å)3.5
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise9.4
Angular Rotation-27.7
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Targetcorrelation coefficient
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)8
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN
Minimum Defocus (nm)1000
Maximum Defocus (nm)2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelGATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER
Nominal Magnification27500
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONLeginon3.2
IMAGE ACQUISITIONAppion3.2
CTF CORRECTIONCTFFIND4
MODEL FITTINGUCSF Chimera1.10
INITIAL EULER ASSIGNMENTEMAN22.07
FINAL EULER ASSIGNMENTFREALIGN9.09
RECONSTRUCTIONFREALIGN9.09
MODEL REFINEMENTRosetta3.6
MODEL REFINEMENTREFMAC5.5
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION27275Microtubule filaments were manually selected using manualpicker.py.