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Ab initio structure of crambin by MicroED at 0.85A
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 41.49 α = 90 b = 18.79 β = 90.835 c = 22.52 γ = 90
Symmetry Space Group P 1 21 1
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B ELECTRON CRYSTALLOGRAPHY FREE R-VALUE 0.85 22.518 22251 1143 71.965 0.156 0.1554 0.1792 0.1641 0.1848 random selection 4.58
Temperature Factor Modeling Anisotropic B[1][1] Anisotropic B[1][2] Anisotropic B[1][3] Anisotropic B[2][2] Anisotropic B[2][3] Anisotropic B[3][3] -0.6 2.3 1.412 -0.813
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_6_deg 19.08 r_dihedral_angle_3_deg 10.292 r_lrange_it 6.814 r_dihedral_angle_2_deg 6.758 r_dihedral_angle_1_deg 5.806 r_lrange_other 4.511 r_rigid_bond_restr 2.953 r_scangle_it 2.029 r_scangle_other 2.025 r_angle_refined_deg 1.653
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_6_deg 19.08 r_dihedral_angle_3_deg 10.292 r_lrange_it 6.814 r_dihedral_angle_2_deg 6.758 r_dihedral_angle_1_deg 5.806 r_lrange_other 4.511 r_rigid_bond_restr 2.953 r_scangle_it 2.029 r_scangle_other 2.025 r_angle_refined_deg 1.653 r_mcangle_it 1.572 r_mcangle_other 1.569 r_scbond_it 1.311 r_scbond_other 1.307 r_mcbond_it 1.041 r_mcbond_other 1.024 r_angle_other_deg 0.698 r_xyhbond_nbd_refined 0.288 r_nbd_refined 0.242 r_symmetry_nbd_refined 0.239 r_symmetry_xyhbond_nbd_refined 0.209 r_symmetry_nbd_other 0.18 r_nbd_other 0.178 r_nbtor_refined 0.159 r_chiral_restr 0.083 r_symmetry_nbtor_other 0.072 r_bond_refined_d 0.017 r_gen_planes_refined 0.009 r_gen_planes_other 0.002 r_bond_other_d
Specimen Preparation Sample Aggregation State 3D ARRAY Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) 0.85 Resolution Method DIFFRACTION PATTERN/LAYERLINES Other Details Refinement Type Symmetry Type 3D CRYSTAL Space Group Name Length a 41.49 Length b 18.79 Length c 18.79 Angle Alpha 90 Angle Beta 90.84 Angle Gamma 90
Map-Model Fitting and Refinement Id 1 Refinement Space RECIPROCAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value 6 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 0.01
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode DIFFRACTION Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION SerialEM MODEL FITTING Coot RECONSTRUCTION Buccaneer MODEL REFINEMENT REFMAC
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE