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 3A69 | pdb_00003a69

Atomic model of the bacterial flagellar hook based on docking an X-ray derived structure and terminal two alpha-helices into an 7.1 angstrom resolution cryoEM map


ELECTRON MICROSCOPY
Sample
bacterial flagellar hook
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameHELIUM
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles
Reported Resolution (Å)7.1
Resolution Method
Other Detailsa modified version of SPIDER program was used for the reconstruction
Refinement Type
Symmetry TypeHELICAL
Data Acquisition
Detector TypeTVIPS TEMCAM-F415 (4k x 4k)
Electron Dose (electrons/Å**2)20
Imaging Experiment1
Date of Experiment2008-02-20
Temperature (Kelvin)50
Microscope ModelJEOL 3200FSC
Minimum Defocus (nm)500
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS1.6
Imaging ModeBRIGHT FIELD
Specimen Holder ModelJEOL
Nominal Magnification50000
Calibrated Magnification89285
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
each images