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A neutron crystallographic analysis of a porcine 2Zn insulin at 2.0 A resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4INS PDB ENTRY 4INS
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 LIQUID DIFFUSION 6.3 293 2.3mg/ml insulin, 50mM sodium citrate, 6mM zinc acetate, 17% acetone, pH6.3, LIQUID DIFFUSION, temperature 293K
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 82.849 α = 90 b = 82.849 β = 90 c = 34.173 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 neutron 298 IMAGE PLATE MACSCIENCE 2006-05-08 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 NUCLEAR REACTOR JRR-3M BEAMLINE 1G-B 2.6 JRR-3M 1G-B
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 80 23.2 0.147 2.2 4824 4824 8.2
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 2.07 81.3 0.393 2.2 4824
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model 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-Free (Depositor) R-Free Selection Details Mean Isotropic B NEUTRON DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 4INS 2 41.43 3 4030 208 68.1 0.168 0.168 0.247 RANDOM 23.8
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] 0.38 1.58 0.38 -0.76
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.8 c_improper_angle_d 7.75 c_mcangle_it 2.35 c_scangle_it 2.32 c_angle_deg 1.7 c_scbond_it 1.52 c_mcbond_it 1.5 c_bond_d 0.008 c_bond_d_na c_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.8 c_improper_angle_d 7.75 c_mcangle_it 2.35 c_scangle_it 2.32 c_angle_deg 1.7 c_scbond_it 1.52 c_mcbond_it 1.5 c_bond_d 0.008 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d_na c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 806 Nucleic Acid Atoms Solvent Atoms 89 Heterogen Atoms 2
Software Software Software Name Purpose DENZO data reduction XFIT data reduction CNS refinement SCALEPACK data scaling CNS phasing