3IZ0

Human Ndc80 Bonsai Decorated Microtubule


ELECTRON MICROSCOPY
Sample
Human Ndc80 bonsai complex bound to the microtubule
Sample Components
tubulin
Ndc80-Spc25 Chimera
Nuf2-Spc24 Chimera
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles
Reported Resolution (Å)8.6
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsParticles were initially aligned using IHRSR protocol in SPIDER with naked MT as reference. Final reconstruction and CTF correction was performed with ...Particles were initially aligned using IHRSR protocol in SPIDER with naked MT as reference. Final reconstruction and CTF correction was performed with FREALIGN. A B-factor of -450 was applied with BFACTOR. FSC was calculated only for MT and Ndc80-NUF2 head, disordered outer head was excluded with soft mask.
Refinement Type
Symmetry TypeHELICAL
Map-Model Fitting and Refinement
IdRefinement SpaceRefinement ProtocolRefinement TargetOverall B ValueFitting ProcedureDetails
1 (1JFF)REALRIGID BODY FITREFINEMENT PROTOCOL--Rigid Body
2 (1JFF)REALRIGID BODY FITREFINEMENT PROTOCOL--Rigid Body
3 (2VE7)REALRIGID BODY FITREFINEMENT PROTOCOL--Rigid Body
4 (2VE7)REALRIGID BODY FITREFINEMENT PROTOCOL--Rigid Body
Data Acquisition
Detector TypeKODAK SO-163 FILM
Electron Dose (electrons/Å**2)15
Imaging Experiment1
Date of Experiment2009-03-12
Temperature (Kelvin)
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)1200
Maximum Defocus (nm)2200
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.2
Imaging ModeBRIGHT FIELD
Specimen Holder ModelGATAN LIQUID NITROGEN
Nominal Magnification50000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONFREALIGN
RECONSTRUCTIONSPIDER