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Cryo-EM structure of Lambda Phage protein GamS bound to RecBCD.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5LD2 experimental model PDB 2UUZ
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 15.514 f_angle_d 0.427 f_chiral_restr 0.036 f_plane_restr 0.003 f_bond_d 0.001
Sample RecBCD complex bound to inhibitory protein lambda GamS Sample Components RecBCD helicase/nuclease complex Lambda GamS
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details 3 ul sample applied
Blot force of -4 for 1 s
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 122796 Reported Resolution (Å) 3.8 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (5LD2) 2 (2UUZ) Refinement Space Refinement Protocol RIGID BODY FIT RIGID BODY FIT Refinement Target Cross-correlation coefficient Cross-correlation coefficient Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 1.4
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1200 Maximum Defocus (nm) 2400 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 105000 Calibrated Magnification 37313 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION Gautomatch IMAGE ACQUISITION EPU CTF CORRECTION Gctf 0.5 MODEL FITTING Coot INITIAL EULER ASSIGNMENT RELION 1.4 FINAL EULER ASSIGNMENT RELION 1.4 CLASSIFICATION RELION 1.4 RECONSTRUCTION RELION 1.4 MODEL REFINEMENT REFMAC MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY CTF correction done at start of processing 134124