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Insulin at pH 2: structural analysis of the conditions promoting insulin fibre formation.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4INS
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 2.1 HANGING DROP VAPOUR DIFFUSION METHOD PROTEIN SOL: 5 MG/ML HUMAN INSULIN IN SULPHURIC ACID PH 2.1 RESERVOIR SOL: SULPHURIC ACID PH 2.1,0.025 M SODIUM SULPHATE
Crystal Properties Matthews coefficient Solvent content 2.2 45
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 44.046 α = 90 b = 46.177 β = 90 c = 51.194 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 120 CCD MARRESEARCH MIRRORS M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-1 ESRF ID14-1
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 1.63 20 100 0.04 36 5 13079
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 1.63 1.66 100 0.245 9 5
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 4INS 1.62 34.3 13079 689 99.2 0.172 0.17 0.207 RANDOM 19.74
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] 0.27 0.4 -0.67
RMS Deviations Key Refinement Restraint Deviation r_scangle_it 4.242 r_scbond_it 2.81 r_mcangle_it 2.002 r_angle_other_deg 1.659 r_mcbond_it 1.232 r_symmetry_hbond_refined 0.244 r_nbd_refined 0.211 r_xyhbond_nbd_refined 0.2 r_symmetry_vdw_refined 0.196 r_chiral_restr 0.114
RMS Deviations Key Refinement Restraint Deviation r_scangle_it 4.242 r_scbond_it 2.81 r_mcangle_it 2.002 r_angle_other_deg 1.659 r_mcbond_it 1.232 r_symmetry_hbond_refined 0.244 r_nbd_refined 0.211 r_xyhbond_nbd_refined 0.2 r_symmetry_vdw_refined 0.196 r_chiral_restr 0.114 r_bond_refined_d 0.013 r_gen_planes_refined 0.006 r_bond_other_d r_angle_refined_deg r_dihedral_angle_1_deg r_dihedral_angle_2_deg r_dihedral_angle_3_deg r_dihedral_angle_4_deg r_gen_planes_other r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_other r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_mcangle_other r_scbond_other 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 810 Nucleic Acid Atoms Solvent Atoms 127 Heterogen Atoms 10
Software Software Software Name Purpose REFMAC refinement DENZO data reduction SCALEPACK data scaling AMoRE phasing