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Structure of human lymphoid-specific helicase HELLS in its auto-inhibitory state
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 10.9879 f_angle_d 0.4717 f_chiral_restr 0.04 f_bond_d 0.0041 f_plane_restr 0.0039
Sample Human lymphoid-specific helicase HELLS
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 338516 Reported Resolution (Å) 2.99 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry D3
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 58.51
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 700 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.5.3 IMAGE ACQUISITION Leginon CTF CORRECTION cryoSPARC 4.5.3 MODEL FITTING UCSF ChimeraX 1.9 FINAL EULER ASSIGNMENT cryoSPARC 4.5.3 CLASSIFICATION cryoSPARC 4.5.3 RECONSTRUCTION cryoSPARC 4.5.3 MODEL REFINEMENT PHENIX 1.21.2_5419 MODEL REFINEMENT Coot
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION