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E. coli dihydropteroate synthase complexed with an 8-mercaptoguanine derivative: 2-azanyl-8-[(2-fluorophenyl)methylsulfanyl]-1,9-dihydropurin-6-one
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AJ2
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 8.8 281 0.147M magnesium acetate
27.1% [w/v] MPEG 5000
0.1M tris chloride, pH 8.8
Protein at 11.1 mg.mL-1
Cocrystallisation
1:1 (150:150 nL) reservoir:protein
Crystal Properties Matthews coefficient Solvent content 2.6 52.76
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 95.887 α = 90 b = 84.546 β = 109.87 c = 84.145 γ = 90
Symmetry Space Group C 1 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 ADSC QUANTUM 315 2016-04-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON AUSTRALIAN SYNCHROTRON BEAMLINE MX2 0.95370 Australian Synchrotron MX2
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) CC (Half) 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 1.839 46.57 99.7 0.06 0.999 18.6 7.4 54783
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.84 1.88 97 0.649 0.872 2.8 7.2
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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 FREE R-VALUE 1AJ2 1.839 45.089 1.34 54764 2794 99.76 0.181 0.1797 0.1815 0.2046 0.2061 Random selection
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]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 18.781 f_angle_d 1.284 f_chiral_restr 0.084 f_bond_d 0.01 f_plane_restr 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4098 Nucleic Acid Atoms Solvent Atoms 245 Heterogen Atoms 40
Software Software Software Name Purpose PHENIX refinement XDS data reduction Aimless data scaling PHASER phasing