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Aspirin induces its Anti-inflammatory effects through its specific binding to Phospholipase A2: Crystal structure of the complex formed between Phospholipase A2 and Aspirin at 1.9A resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1LFF PDB entry 1LFF
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6 293 10mm Sodium Phosphate buffer, 2mm Calciun chloride, 35% ethanol, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.2 45.3
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.627 α = 90 b = 42.627 β = 90 c = 65.137 γ = 90
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 290 IMAGE PLATE MARRESEARCH Mirrors 2003-02-19 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym 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 20 97.1 0.099 16.7 7.8 8708 22.1
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1.9 1.95 75.6 0.223 2.1
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 (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB entry 1LFF 1.93 19.35 8708 7842 866 100 0.17748 0.175 0.204 RANDOM 22.277
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] 0.2 0.2 -0.41
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 17.627 r_dihedral_angle_3_deg 17.509 r_scangle_it 3.767 r_dihedral_angle_1_deg 2.958 r_scbond_it 2.413 r_mcangle_it 1.635 r_angle_refined_deg 1.543 r_mcbond_it 0.832 r_angle_other_deg 0.821 r_nbd_refined 0.308
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 17.627 r_dihedral_angle_3_deg 17.509 r_scangle_it 3.767 r_dihedral_angle_1_deg 2.958 r_scbond_it 2.413 r_mcangle_it 1.635 r_angle_refined_deg 1.543 r_mcbond_it 0.832 r_angle_other_deg 0.821 r_nbd_refined 0.308 r_symmetry_vdw_other 0.292 r_symmetry_vdw_refined 0.206 r_nbd_other 0.203 r_xyhbond_nbd_refined 0.145 r_chiral_restr 0.122 r_symmetry_hbond_refined 0.107 r_bond_refined_d 0.011 r_gen_planes_refined 0.005 r_gen_planes_other 0.003 r_bond_other_d 0.001 r_dihedral_angle_4_deg r_nbtor_refined r_nbtor_other r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_hbond_other r_mcbond_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 913 Nucleic Acid Atoms Solvent Atoms 105 Heterogen Atoms 14
Software Software Software Name Purpose REFMAC refinement MAR345 data collection SCALEPACK data scaling AMoRE phasing