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Crystal structure of sterol 14-alpha demethylase (CYP51) from Trypanosoma cruzi in complex with a potential antichagasic drug, posaconazole
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, HANGING DROP 7.2 298 PEG 3350, POTASSIUM FORMATE, SODIUM CHLORIDE, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.52 51.17
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 63.121 α = 90 b = 63.121 β = 90 c = 229.302 γ = 120
Symmetry Space Group P 31 2 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 MARMOSAIC 225 mm CCD Be Lenses/Diamond Laue Mono 2009-07-17 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 2.89 30 99.53 0.067 26 8.5 11966 11910 4.1 4.1 71.7
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 2.89 2.94 100 0.588 4.1 8.8
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 (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 3G1Q 2.89 29.17 4.1 4.1 11910 606 99.52 0.23033 0.22807 0.2302 0.27597 0.2799 RANDOM 45.997
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] -0.27 -0.14 -0.27 0.41
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 29.718 r_dihedral_angle_4_deg 15.401 r_dihedral_angle_3_deg 14.266 r_scangle_it 4.078 r_dihedral_angle_1_deg 3.83 r_scbond_it 2.441 r_angle_refined_deg 1.697 r_mcangle_it 1.481 r_mcbond_it 0.77 r_chiral_restr 0.054
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 29.718 r_dihedral_angle_4_deg 15.401 r_dihedral_angle_3_deg 14.266 r_scangle_it 4.078 r_dihedral_angle_1_deg 3.83 r_scbond_it 2.441 r_angle_refined_deg 1.697 r_mcangle_it 1.481 r_mcbond_it 0.77 r_chiral_restr 0.054 r_bond_refined_d 0.014 r_gen_planes_refined 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3491 Nucleic Acid Atoms Solvent Atoms 10 Heterogen Atoms 94
Software Software Software Name Purpose HKL-2000 data collection PHASER phasing REFMAC refinement HKL-2000 data reduction HKL-2000 data scaling