5UCY

Cryo-EM map of protofilament of microtubule doublet


ELECTRON MICROSCOPY
Sample
Protofilament from ciliary microtubule doublet
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsBlot force 3 for 5 seconds
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles23
Reported Resolution (Å)4.6
Resolution MethodFSC 0.143 CUT-OFF
Other Details23 boxes of the protofilament are boxed out from the doublet map (EMD-8528), aligned and averaged using subtomogram averaging software.
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolBACKBONE TRACE
Refinement Targetminimization global
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON II (4k x 4k)
Electron Dose (electrons/Å**2)45
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1200
Maximum Defocus (nm)3800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification59000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONE2helixboxer2
IMAGE ACQUISITIONEPU1.6
CTF CORRECTIONCTFFIND4
MODEL FITTINGUCSF Chimera
MODEL REFINEMENTPHENIX
INITIAL EULER ASSIGNMENTMATLAB
FINAL EULER ASSIGNMENTAV3
RECONSTRUCTIONAV3
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION127428