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Full-length human cystathionine beta-synthase with C-terminal 6xHis-tag, SAM bound, activated state, helical reconstruction
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold experimental model PDB 4UUU experimental model PDB 4PCU
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 12.615 f_angle_d 0.7923 f_chiral_restr 0.0459 f_plane_restr 0.0041 f_bond_d 0.0039
Sample Helical assembly of full-length human cystathionine beta-synthase in the basal state
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 425260 Reported Resolution (Å) 4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry D2 Axial Rise 46.7 Angular Rotation -178.6
Map-Model Fitting and Refinement Id 1 (4UUU, 4PCU) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value 79.15 Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 39.96
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 900 Maximum Defocus (nm) 3000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 3.1.0 CTF CORRECTION cryoSPARC 3.1.0 MODEL FITTING UCSF ChimeraX INITIAL EULER ASSIGNMENT cryoSPARC ab-inito from data FINAL EULER ASSIGNMENT cryoSPARC ab-inito from data CLASSIFICATION cryoSPARC 3.1.0 RECONSTRUCTION cryoSPARC 3.1.0 MODEL REFINEMENT PHENIX MODEL REFINEMENT ISOLDE
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 5240414