4CK5

Pseudo-atomic model of microtubule-bound human kinesin-5 motor domain in the ADP state, based on cryo-electron microscopy experiment.


ELECTRON MICROSCOPY
Sample
microtubule-bound human kinesin-5 motor domain in the ADP state
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles9615
Reported Resolution (Å)10
Resolution Method
Other DetailsTO ACCOUNT FOR THE FACT THAT HELIX ALPHA4 IS LONGER IN OUR RECONSTRUCTION THAN IN THE AVAILABLE ADP CRYSTAL STRUCTURES, WE MODELLED 7 HELICAL TURNS OF ...TO ACCOUNT FOR THE FACT THAT HELIX ALPHA4 IS LONGER IN OUR RECONSTRUCTION THAN IN THE AVAILABLE ADP CRYSTAL STRUCTURES, WE MODELLED 7 HELICAL TURNS OF HELIX ALPHA4 ( RESIDUES D279-E304), AS OBSERVED IN THE ENTRY 3HQD. THE N- TERMINAL SEQUENCE WAS MODELLED USING MODELLER. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2537. (DEPOSITION ID: 12202).
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (3HQD, 1JFF)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCross-correlation coefficient
Overall B Value
Fitting Procedure
DetailsMETHOD--FLEXIBLE
Data Acquisition
Detector TypeGATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)18
Imaging Experiment1
Date of Experiment2012-10-20
Temperature (Kelvin)90
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)700
Maximum Defocus (nm)2400
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification68000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGFlex-EM
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONFREALIGN
RECONSTRUCTIONSPIDER
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
FREALIGN