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Cryo-EM structure of hexameric apo human K293st geranylgeranyl diphosphate synthase
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6R4V
Sample Cryo-EM structure of hexameric apo human K293st geranylgeranyl diphosphate synthase
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Staining Type NEGATIVE Staining Material NanoVan Staining Details Samples in solution (0.1 mg/mL) were air dried onto silicone monoxide treated, formvar coated grids and subsequently stained with NanoVan.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 1142326 Reported Resolution (Å) 2.3 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (6R4V) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 47
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 1900 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.5 IMAGE ACQUISITION EPU 3.7.1 CTF CORRECTION cryoSPARC 4.5 MODEL FITTING UCSF ChimeraX 1.10.1 MODEL REFINEMENT PHENIX 1.20.1-4487 INITIAL EULER ASSIGNMENT cryoSPARC 4.5 FINAL EULER ASSIGNMENT cryoSPARC 4.5 CLASSIFICATION cryoSPARC 4.5 RECONSTRUCTION cryoSPARC 4.5
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION