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The crystal structure of guamerin in complex with chymotrypsin and the development of an elastase-specific inhibitor
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1CHO
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8.5 295 0.1M Tris-HCl, 0.2M MgCl2, 30% PEG 4000, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties Matthews coefficient Solvent content 1.9 35.31
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 44.274 α = 90 b = 43.992 β = 90 c = 122.57 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 MAR CCD 165 mm 2002-11-27 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SPRING-8 BEAMLINE BL41XU 1.000 SPring-8 BL41XU
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym 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 2.5 30 83.8 0.114 17 3.9 8762 7343 30.5
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.5 2.59 82 0.256 4.9 4 876
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) 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 1CHO 2.5 29.94 8762 7017 378 80 0.187 0.187 0.1867 0.241 0.2408 RANDOM 26
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] 2.48 -3.21 0.73
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 25.8 c_scangle_it 2.44 c_mcangle_it 1.89 c_scbond_it 1.71 c_angle_deg 1.4 c_mcbond_it 1.15 c_improper_angle_d 0.88 c_bond_d 0.006 c_bond_d_na c_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 25.8 c_scangle_it 2.44 c_mcangle_it 1.89 c_scbond_it 1.71 c_angle_deg 1.4 c_mcbond_it 1.15 c_improper_angle_d 0.88 c_bond_d 0.006 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 2090 Nucleic Acid Atoms Solvent Atoms 82 Heterogen Atoms
Software Software Software Name Purpose CNS refinement HKL-2000 data collection HKL-2000 data reduction HKL-2000 data scaling EPMR phasing