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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 28 seconds (2nd pH jump)
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 2.13 42.32
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 51.38 α = 90 b = 57.59 β = 90 c = 74.758 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 2005-07-03 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 1.9 19.87 99.4 0.063 16.1 3.4 17944 23.2
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 1.9 2 99 0.328 3 3.3 2550
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-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 3EST 1.9 19.87 17944 17910 914 99.14 0.175 0.175 0.172 0.226 0.243 RANDOM 33.436
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] 2.62 -1.01 -1.61
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.843 r_dihedral_angle_4_deg 20.939 r_dihedral_angle_3_deg 12.282 r_dihedral_angle_1_deg 6.109 r_scangle_it 5.41 r_scbond_it 4.48 r_mcangle_it 2.971 r_mcbond_it 2.208 r_angle_refined_deg 1.274 r_nbtor_refined 0.303
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.843 r_dihedral_angle_4_deg 20.939 r_dihedral_angle_3_deg 12.282 r_dihedral_angle_1_deg 6.109 r_scangle_it 5.41 r_scbond_it 4.48 r_mcangle_it 2.971 r_mcbond_it 2.208 r_angle_refined_deg 1.274 r_nbtor_refined 0.303 r_symmetry_vdw_refined 0.235 r_symmetry_hbond_refined 0.233 r_nbd_refined 0.192 r_metal_ion_refined 0.143 r_xyhbond_nbd_refined 0.131 r_chiral_restr 0.084 r_bond_refined_d 0.012 r_gen_planes_refined 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1802 Nucleic Acid Atoms Solvent Atoms 121 Heterogen Atoms 6
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling REFMAC refinement PDB_EXTRACT data extraction MOSFLM data reduction CCP4 data scaling