7NBA

Plasmodium falciparum kinesin-5 motor domain bound to AMPPNP, complexed with 14 protofilament microtubule.


ELECTRON MICROSCOPY
Sample
14 protofilament microtubule complexed with Plasmodium falciparum kinesin-5 motor domain bound to AMPPNP. Asymmetric unit.
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details5 uM microtubules were applied to the grid and incubated for 30 seconds. The grid was blotted, then 40 uM kinesin motor domain added, incubated for 30 ...5 uM microtubules were applied to the grid and incubated for 30 seconds. The grid was blotted, then 40 uM kinesin motor domain added, incubated for 30 seconds, then blotted. 40 uM Kinesin motor domain was again added, incubated for 40 seconds, blotted, then plunge frozen.
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles166375
Reported Resolution (Å)4
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsRELION 3D auto-refine
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise9
Angular Rotation-25.75
Map-Model Fitting and Refinement
Id1 (3HQD, 3JAT)
Refinement Space
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)58
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI POLARA 300
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONGctf
MODEL FITTINGFlex-EM
MODEL REFINEMENTRosetta
INITIAL EULER ASSIGNMENTRELION
FINAL EULER ASSIGNMENTRELION
RECONSTRUCTIONRELION
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING ONLY