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Human Monomeric Kinesin (1BG2) and Bovine Tubulin (1JFF) Docked into the 9-Angstrom Cryo-EM Map of Nucleotide-Free Kinesin Complexed to the Microtubule
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1JFF experimental model PDB 1BG2
Sample Nucleotide-free kinesin bound to a 13-protofilament microtubule Sample Components Kinesin heavy chain Tubulin alpha chain Tubulin beta chain
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument HOMEMADE PLUNGER Cryogen Name ETHANE Sample Vitrification Details ETHANE
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 150000 Reported Resolution (Å) 9 Resolution Method Other Details Single-particle analysis was employed. Refinement Type Symmetry Type HELICAL
Map-Model Fitting and Refinement Id 1 (1JFF, 1BG2) Refinement Space RECIPROCAL Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type KODAK SO-163 FILM Electron Dose (electrons/Å**2) 16
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) 103.15 Microscope Model JEOL 4000 Minimum Defocus (nm) 700 Maximum Defocus (nm) 1500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 4.1 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 60000 Calibrated Magnification Source LAB6 Acceleration Voltage (kV) 400 Imaging Details
EM Software Task Software Package Version MODEL FITTING Situs RECONSTRUCTION SPIDER
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details CTF correction was integrated into the back projection process with a customized C program