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Structure of peptide segment KLVFFA from amyloid-beta determined by liquid cell MicroED at room temperature
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2Y29
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 9.68 α = 90 b = 12.94 β = 90 c = 41.82 γ = 90
Symmetry Space Group P 21 21 21
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B ELECTRON CRYSTALLOGRAPHY MOLECULAR REPLACEMENT FREE R-VALUE 1 11 1.35 2442 245 77.92 0.2799 0.2757 0.2853 0.3183 0.3254
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]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 6.367 f_angle_d 0.595 f_chiral_restr 0.072 f_bond_d 0.005 f_plane_restr 0.004
Sample Hexapeptide segment KLVFFA from amyloid-beta
Specimen Preparation Sample Aggregation State 3D ARRAY
3D Reconstruction Reconstruction Method CRYSTALLOGRAPHY Number of Particles Reported Resolution (Å) 1 Resolution Method DIFFRACTION PATTERN/LAYERLINES Other Details Refinement Type Symmetry Type 3D CRYSTAL Space Group Name Length a 9.68 Length b 12.94 Length c 12.94 Angle Alpha 90 Angle Beta 90 Angle Gamma 90
Map-Model Fitting and Refinement Id 1 (2Y29) Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI CETA (4k x 4k) Electron Dose (electrons/Å**2) 0.01
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode DIFFRACTION Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version RECONSTRUCTION PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE