4CK6 | pdb_00004ck6

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

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3HQD
experimental model	PDB	1JFF

Sample
MICROTUBULE-BOUND HUMAN KINESIN-5 MOTOR DOMAIN

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument	FEI VITROBOT MARK I
Cryogen Name	ETHANE
Sample Vitrification Details	LIQUID ETHANE

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	10692
Reported Resolution (Å)	9.2
Resolution Method
Other Details	THE N-TERMINAL SEQUENCE, ABSENT IN THE CRYSTALLOGRAPHIC MODEL, WAS MODELLED USING MODELLER. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2533. (DEPOSITION ID: 12198).
Refinement Type
Symmetry Type	HELICAL

Map-Model Fitting and Refinement
Id	1 (3HQD, 1JFF)
Refinement Space	REAL
Refinement Protocol	FLEXIBLE FIT
Refinement Target	Cross-correlation coefficient
Overall B Value
Fitting Procedure
Details	METHOD--FLEXIBLE REFINEMENT PROTOCOL--X-RAY

Data Acquisition
Detector Type	KODAK SO-163 FILM
Electron Dose (electrons/Å**2)	18

Imaging Experiment	1
Date of Experiment	2011-03-10
Temperature (Kelvin)	90
Microscope Model	FEI TECNAI F20
Minimum Defocus (nm)	700
Maximum Defocus (nm)	2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	50000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	200
Imaging Details

EM Software
Task	Software Package	Version
MODEL FITTING	Flex-EM
MODEL FITTING	UCSF Chimera
RECONSTRUCTION	FREALIGN
RECONSTRUCTION	SPIDER

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	FREALIGN