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Sterol 14-alpha demethylase (CYP51) from Trypanosoma brucei in complex with the tipifarnib derivative 6-((4-chlorophenyl)(methoxy)(1-methyl-1H-imidazol-5-yl)methyl)-4-(2,6-difluorophenyl)-1-methylquinolin-2(1H)-one
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3G1Q PDB entry 3g1q
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 7.4 297 POTASSIUM PHOSPHATE, SODIUM CHLORIDE, GLYCEROL, PEG 5000, n-TETRADECYL-BETA-D-MALTOSIDE, 6-((4-CHLOROPHENYL)(METHOXY)(1-METHYL-1H-IMIDAZOL-YL)METHYL)-4-(2,6-DIFLUOROPHENYL)-1-METHYLQUINOLIN-2(1H)-ONE, pH 7.4, VAPOR DIFFUSION, temperature 297K
Crystal Properties Matthews coefficient Solvent content 2.43 49.45
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 59.722 α = 74.47 b = 79.715 β = 81.58 c = 117.521 γ = 68.05
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 MARMOSAIC 225 mm CCD Be Lenses/Diamond Laue Mono 2011-08-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 21-ID-F 0.97872 APS 21-ID-F
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 2.05 50 94 0.049 43.6 6 122058 115222 2.8 2.8 38.7
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 2.05 2.09 95.4 0.695 2.8 5.9 8174
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 PDB entry 3g1q 2.05 30 122058 115222 6082 99.39 0.18887 0.18887 0.18593 0.1851 0.24338 0.2412 RANDOM 49.848
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] 0.88 -0.23 0.9 -1.21 -0.65 0.58
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.132 r_dihedral_angle_4_deg 19.828 r_dihedral_angle_3_deg 17.457 r_scangle_it 7.841 r_dihedral_angle_1_deg 6.315 r_scbond_it 5.147 r_mcangle_it 3.311 r_rigid_bond_restr 2.838 r_mcbond_it 1.963 r_angle_refined_deg 1.135
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 38.132 r_dihedral_angle_4_deg 19.828 r_dihedral_angle_3_deg 17.457 r_scangle_it 7.841 r_dihedral_angle_1_deg 6.315 r_scbond_it 5.147 r_mcangle_it 3.311 r_rigid_bond_restr 2.838 r_mcbond_it 1.963 r_angle_refined_deg 1.135 r_chiral_restr 0.079 r_bond_refined_d 0.009 r_gen_planes_refined 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 14300 Nucleic Acid Atoms Solvent Atoms 295 Heterogen Atoms 316
Software Software Software Name Purpose HKL-2000 data collection PHASER phasing REFMAC refinement HKL-2000 data reduction HKL-2000 data scaling