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The Crystal Structure of the Double-headed Arrowhead Protease Inhibitor A in Complex with Two Trypsins
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2J9N 2J9N, 1AVA experimental model PDB 1AVA 2J9N, 1AVA
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 EVAPORATION 6.5 291 0.1M sodium cacodylate pH6.5, 0.2M (NH4)2SO4 20% PEG 8000, EVAPORATION, temperature 291K
Crystal Properties Matthews coefficient Solvent content 2.43 49.37
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 76.634 α = 90 b = 110.863 β = 90 c = 152.991 γ = 90
Symmetry Space Group C 2 2 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 IMAGE PLATE MARRESEARCH 2007-06-11 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU MICROMAX-007 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 2.48 30 99.7 0.1246 9.1 23500 22790 3 3 45.62
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 2.48 2.57 99.3 0.478 2.1 2298
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (I) Cut-off Sigma (F) 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 2J9N, 1AVA 2.48 30 2.3 2.3 23500 22030 1396 99.69 0.19724 0.19419 0.2072 0.24483 0.246 RANDOM 37.082
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] -1.91 0.86 1.05
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 37.875 r_dihedral_angle_3_deg 16.602 r_dihedral_angle_4_deg 15.201 r_dihedral_angle_1_deg 8.558 r_scangle_it 2.444 r_scbond_it 1.461 r_angle_refined_deg 1.437 r_mcangle_it 0.951 r_mcbond_it 0.507 r_chiral_restr 0.11
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 37.875 r_dihedral_angle_3_deg 16.602 r_dihedral_angle_4_deg 15.201 r_dihedral_angle_1_deg 8.558 r_scangle_it 2.444 r_scbond_it 1.461 r_angle_refined_deg 1.437 r_mcangle_it 0.951 r_mcbond_it 0.507 r_chiral_restr 0.11 r_bond_refined_d 0.011 r_gen_planes_refined 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4599 Nucleic Acid Atoms Solvent Atoms 160 Heterogen Atoms 101
Software Software Software Name Purpose REFMAC refinement MAR345dtb data collection AUTOMAR data reduction SCALA data scaling PHASES phasing