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Cryo-EM map of human telomerase-DNA-TPP1-POT1 complex (sharpened map)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7BG9
Refinement RMS Deviations Key Refinement Restraint Deviation r_long_range_B_refined 37.431 r_long_range_B_other 37.431 r_dihedral_angle_2_deg 28.356 r_scangle_other 26.079 r_mcangle_it 24.19 r_mcangle_other 24.19 r_scbond_it 16.665 r_scbond_other 16.665 r_mcbond_it 15.579 r_mcbond_other 15.576
RMS Deviations Key Refinement Restraint Deviation r_long_range_B_refined 37.431 r_long_range_B_other 37.431 r_dihedral_angle_2_deg 28.356 r_scangle_other 26.079 r_mcangle_it 24.19 r_mcangle_other 24.19 r_scbond_it 16.665 r_scbond_other 16.665 r_mcbond_it 15.579 r_mcbond_other 15.576 r_dihedral_angle_3_deg 13.172 r_dihedral_angle_4_deg 12.852 r_dihedral_angle_1_deg 4.979 r_angle_other_deg 1.475 r_angle_refined_deg 1.424 r_chiral_restr 0.086 r_gen_planes_refined 0.012 r_gen_planes_other 0.011 r_bond_refined_d 0.01 r_bond_other_d 0.002 r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_scangle_it r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Sample Complex of telomeric DNA-bound human telomerase with TPP1-POT1 Sample Components Telomeric DNA Telomerase reverse transcriptase and telomeric RNA Histones TPP1-POT1
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 192871 Reported Resolution (Å) 3.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7BG9) Refinement Space RECIPROCAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 48
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 3000 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 81000 Calibrated Magnification 45871 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 4.0 IMAGE ACQUISITION EPU 2.13.0.3175REL CTF CORRECTION CTFFIND 4 MODEL FITTING UCSF ChimeraX MODEL FITTING UCSF Chimera MODEL FITTING Coot MODEL REFINEMENT REFMAC 5.8 INITIAL EULER ASSIGNMENT RELION 4 FINAL EULER ASSIGNMENT RELION 4 CLASSIFICATION RELION 4 RECONSTRUCTION RELION 4.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 21589656