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Porcine pancreatic elastase complexed with Asn-Pro-Ile and Ala-Ala at pH 5.0
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 NPI, AND THEN SOAKED WITH Ala-Ala (2 MG) IN 250MM SODIUM ACETATE (PH 5.0) (5 MICROLITRES) FOR 30 MIN, VAPOR DIFFUSION, HANGING DROP, temperature 294K
Crystal Properties Matthews coefficient Solvent content 2.08 40.93
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 50.463 α = 90 b = 57.663 β = 90 c = 74.233 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 2005-06-16 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU MICROMAX-007
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 17.46 99.9 0.034 24.8 3.6 24480 16.3
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 1.7 1.79 99.9 0.144 8.2 3.5 3493
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 17.46 24480 24434 1245 99.84 0.165 0.165 0.163 0.1668 0.194 0.1951 RANDOM 17.222
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] 0.07 -0.42 0.36
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.705 r_dihedral_angle_4_deg 23.958 r_dihedral_angle_3_deg 11.371 r_dihedral_angle_1_deg 5.673 r_scangle_it 5.203 r_scbond_it 4.108 r_mcangle_it 2.872 r_mcbond_it 2.024 r_angle_refined_deg 1.371 r_nbtor_refined 0.307
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.705 r_dihedral_angle_4_deg 23.958 r_dihedral_angle_3_deg 11.371 r_dihedral_angle_1_deg 5.673 r_scangle_it 5.203 r_scbond_it 4.108 r_mcangle_it 2.872 r_mcbond_it 2.024 r_angle_refined_deg 1.371 r_nbtor_refined 0.307 r_symmetry_vdw_refined 0.222 r_nbd_refined 0.202 r_symmetry_hbond_refined 0.166 r_xyhbond_nbd_refined 0.116 r_chiral_restr 0.109 r_metal_ion_refined 0.104 r_bond_refined_d 0.013 r_gen_planes_refined 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1802 Nucleic Acid Atoms Solvent Atoms 126 Heterogen Atoms 17
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling REFMAC refinement PDB_EXTRACT data extraction MOSFLM data reduction CCP4 data scaling