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Porcine pancreatic elastase complexed with beta-casomorphin-7 and Arg-Phe at pH 5.0 (50 min soak) and immersed in pH 9 buffer for 30 seconds
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3EST
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5 294 25MM SODIUM SULPHATE, 25MM SODIUM ACETATE (PH 5.0), 25 MG/ML PPE AND 17.5 MG/ML BCM7, AND THEN SOAKED WITH ARG-PHE (2 MG) IN 250MM SODIUM ACETATE (PH 5.0) (5 MICROLITRES) FOR 50 MIN, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Crystal Properties Matthews coefficient Solvent content 2.04 39.6
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 50.544 α = 90 b = 57.781 β = 90 c = 74.756 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 127 IMAGE PLATE RIGAKU RAXIS IV OSMIC mirrors 2005-07-02 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU MICROMAX-007 1.54180
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 1.7 19.7 99.9 0.046 21.8 3.4 24742 19.6
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 1.7 1.79 100 0.169 5.3 3.3 3539
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 (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 3EST 1.7 19.7 24742 24695 1256 99.9 0.176 0.176 0.173 0.1786 0.22 0.2232 RANDOM 27.949
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] 2.69 -0.35 -2.34
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.452 r_dihedral_angle_4_deg 25.509 r_dihedral_angle_3_deg 11.656 r_dihedral_angle_1_deg 5.948 r_scangle_it 5.907 r_scbond_it 4.922 r_mcangle_it 3.503 r_mcbond_it 2.634 r_angle_refined_deg 1.746 r_nbtor_refined 0.311
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.452 r_dihedral_angle_4_deg 25.509 r_dihedral_angle_3_deg 11.656 r_dihedral_angle_1_deg 5.948 r_scangle_it 5.907 r_scbond_it 4.922 r_mcangle_it 3.503 r_mcbond_it 2.634 r_angle_refined_deg 1.746 r_nbtor_refined 0.311 r_symmetry_vdw_refined 0.264 r_symmetry_hbond_refined 0.218 r_nbd_refined 0.212 r_chiral_restr 0.135 r_xyhbond_nbd_refined 0.129 r_metal_ion_refined 0.098 r_bond_refined_d 0.019 r_gen_planes_refined 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1810 Nucleic Acid Atoms Solvent Atoms 127 Heterogen Atoms 13
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling REFMAC refinement PDB_EXTRACT data extraction MOSFLM data reduction CCP4 data scaling