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E. coli dihydropteroate synthase complexed with an 8-mercaptoguanine derivative: 2-amino-8-{[2-(4-methoxyphenyl)-2-oxoethyl]sulfanyl}-1,7-dihydro-6H-purin-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 6.3 281 0.066M magnesium acetate
17%w/v PEG8000
0.1M sodium cacodylate 6.3
Protein at 11.1 mg.mL-1
Cocrystallisation
1:1 (150:150 nL) reservoir:protein
Crystal Properties Matthews coefficient Solvent content 2.6 52.77
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 95.881 α = 90 b = 84.803 β = 110.47 c = 84.223 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 2016-04-28 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 1.951 46.676 99.5 0.068 0.999 18.3 7.4 45749
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 1.951 2 98.3 0.639 0.896 2.8 7.4
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-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1AJ2 1.951 43.758 1.36 45717 2273 99.28 0.1885 0.187 0.2166 0.2074 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 18.664 f_angle_d 1.401 f_chiral_restr 0.088 f_bond_d 0.012 f_plane_restr 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4066 Nucleic Acid Atoms Solvent Atoms 205 Heterogen Atoms 46
Software Software Software Name Purpose PHENIX refinement XDS data reduction Aimless data scaling PHASER phasing