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Structure of the human mitochondrial Hsp70 (mortalin; R126W mutant) missing SBD-a lid bound to nucleotide exchange factor GrpEL1 (Y173A mutant)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.621 f_angle_d 0.442 f_chiral_restr 0.04 f_bond_d 0.003 f_plane_restr 0.003
Sample Mortalin(R126W)-GrpEL1(Y173A) without SBD-a lid
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument HOMEMADE PLUNGER Cryogen Name ETHANE-PROPANE Sample Vitrification Details Custom manual plunger. Greater than 95% humidity
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 54402 Reported Resolution (Å) 3.38 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value 85.7 Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 60
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.3.0 IMAGE ACQUISITION EPU 4.4.1 CTF CORRECTION cryoSPARC 4.3.1 MODEL FITTING PHENIX 1.21 INITIAL EULER ASSIGNMENT cryoSPARC 4.3.1 FINAL EULER ASSIGNMENT cryoSPARC 4.3.1 CLASSIFICATION cryoSPARC 4.3.1 RECONSTRUCTION cryoSPARC 4.3.1 MODEL REFINEMENT PHENIX 1.21
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2091743