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Discovery of a Novel Class of triazolones as Checkpoint Kinase Inhibitors - Hit to Lead Exploration
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1IA8 PDB ENTRY 1IA8
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.8 HANGING DROP. 3UL PLUS 3UL PROTEIN: 7 MG/ML, 25MM TRIS PH7.5, 500MM NACL, 5% GLYCEROL. 5MM DTT WELL: 15-17% (W/V) PEG8000, 250MM AMMONIUM SULPHATE, 2% (V/V) GLYCEROL AND 100 MM SODIUM CACODYLATE PH 6.8
Crystal Properties Matthews coefficient Solvent content 2.63 53.21
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 45 α = 90 b = 66.236 β = 94.59 c = 58.473 γ = 90
Symmetry Space Group P 1 21 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD ADSC CCD 2001-12-05 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SRS BEAMLINE PX9.6 SRS PX9.6
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 37.3 93.8 0.1 8.8 2.5 25219 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 64.6 0.24 3 1.9
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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 PDB ENTRY 1IA8 1.9 37.3 23949 1270 93.11 0.1616 0.15998 0.1729 0.19176 0.2023 RANDOM 14.972
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] -0.17 -0.58 0.63 -0.55
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.661 r_dihedral_angle_4_deg 15.705 r_dihedral_angle_3_deg 12.516 r_dihedral_angle_1_deg 5.408 r_scangle_it 2.75 r_scbond_it 1.679 r_angle_refined_deg 1.298 r_angle_other_deg 1.144 r_mcangle_it 1.125 r_mcbond_it 0.606
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.661 r_dihedral_angle_4_deg 15.705 r_dihedral_angle_3_deg 12.516 r_dihedral_angle_1_deg 5.408 r_scangle_it 2.75 r_scbond_it 1.679 r_angle_refined_deg 1.298 r_angle_other_deg 1.144 r_mcangle_it 1.125 r_mcbond_it 0.606 r_mcbond_other 0.119 r_chiral_restr 0.075 r_bond_refined_d 0.011 r_gen_planes_refined 0.005 r_bond_other_d 0.001 r_gen_planes_other 0.001 r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcangle_other r_scbond_other r_scangle_other r_long_range_B_refined r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2235 Nucleic Acid Atoms Solvent Atoms 352 Heterogen Atoms 25
Software Software Software Name Purpose REFMAC refinement MOSFLM data reduction SCALA data scaling AMoRE phasing