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Structure of segment KLVFFA from the amyloid-beta peptide (Ab, residues 16-21), alternate polymorph III
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 8.5 AB16-21 FORM III CRYSTALS WERE OBTAINED AFTER THE SEGMENT WAS DISSOLVED IN WATER AT 5 MG/ML AND MIXED WITH 0.2M AMMONIUM ACETATE, 0.1 M TRIS BUFFER PH 8.5 AND 30% ISOPROPANOL.
Crystal Properties Matthews coefficient Solvent content 1.73 29
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 9.59 α = 90 b = 12.07 β = 90 c = 42.21 γ = 90
Symmetry Space Group P 21 21 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD MARMOSAIC 225 mm CCD M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID23-2 ESRF ID23-2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 2.3 20 94.3 0.19 5.9 3.9 266 3 34.134
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.3 2.4 89.5 0.52 3.19 3.1
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 (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 2.3 20 251 14 94.31 0.22609 0.2241 0.1764 0.26003 0.2169 RANDOM 22.654
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] -11.45 11.8 -0.34
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_3_deg 19.219 r_dihedral_angle_2_deg 14.728 r_dihedral_angle_1_deg 5.136 r_angle_refined_deg 1.519 r_chiral_restr 0.127 r_bond_refined_d 0.023 r_gen_planes_refined 0.009 r_bond_other_d r_angle_other_deg r_dihedral_angle_4_deg
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_3_deg 19.219 r_dihedral_angle_2_deg 14.728 r_dihedral_angle_1_deg 5.136 r_angle_refined_deg 1.519 r_chiral_restr 0.127 r_bond_refined_d 0.023 r_gen_planes_refined 0.009 r_bond_other_d r_angle_other_deg r_dihedral_angle_4_deg r_gen_planes_other 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_mcbond_it r_mcbond_other r_mcangle_it r_mcangle_other r_scbond_it r_scbond_other r_scangle_it r_scangle_other r_long_range_B_refined r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 52 Nucleic Acid Atoms Solvent Atoms 2 Heterogen Atoms
Software Software Software Name Purpose REFMAC refinement XDS data reduction XSCALE data scaling PHASER phasing