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Crystal structure of a BPTI variant (Cys14->Ser, Cys38->Ser) in complex with trypsin
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2PTC PDB ENTRY 2PTC
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 296 1.75 M ammonium sulfate, 0.1 M HEPES, 0.02% sodium azide, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Crystal Properties Matthews coefficient Solvent content 3.18 61.34
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 74.744 α = 90 b = 81.748 β = 90 c = 124.274 γ = 90
Symmetry Space Group I 2 2 2
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 NONIUS KAPPA CCD2000 OSMIC CONFOCAL MAX-FLUX (GREEN) 2004-10-23 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE ENRAF-NONIUS FR591 1.5418
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 1.56 20 98.6 0.043 20.4 8 54071 53322 -3
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) 1.56 1.62 86.7 0.186 3.8 2.3 4633
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (I) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) 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 PDB ENTRY 2PTC 1.58 20 -3 52391 51979 4237 99.2 0.2044 0.2044 0.2032 0.2098 0.2177 0.2242 RANDOM 14.4
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 c_dihedral_angle_d 25.4 c_scangle_it 2.138 c_mcangle_it 1.558 c_scbond_it 1.514 c_angle_deg 1.32 c_mcbond_it 0.936 c_bond_d 0.005 c_bond_d_na c_bond_d_prot c_angle_d
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 25.4 c_scangle_it 2.138 c_mcangle_it 1.558 c_scbond_it 1.514 c_angle_deg 1.32 c_mcbond_it 0.936 c_bond_d 0.005 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 c_improper_angle_d_na c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2219 Nucleic Acid Atoms Solvent Atoms 261 Heterogen Atoms 71
Software Software Software Name Purpose HKL-2000 data collection SCALEPACK data scaling CNS refinement HKL-2000 data reduction CNS phasing