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E. coli dihydropteroate synthase complexed with an 8-mercaptoguanine derivative: 2-[(2-amino-6-oxo-6,9-dihydro-1H-purin-8-yl)sulfanyl]-N-methylacetamide
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 0.083 M magnesium sulfate
24.5% [w/v] PEG6000
0.1 M sodium cacodylate, pH 6.32
Protein at 11.1 mg.mL-1
Cocrystallisation
1:1 (150:150 nL) reservoir:protein
Crystal Properties Matthews coefficient Solvent content 2.56 51.94
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 94.782 α = 90 b = 84.599 β = 110.52 c = 83.963 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 210 2016-04-15 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON AUSTRALIAN SYNCHROTRON BEAMLINE MX1 0.95370 Australian Synchrotron MX1
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 1.99 46.2 98.6 0.067 0.999 14.8 7.4 42177
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 1.99 2.04 81.7 0.726 0.848 2 7.1
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 1.994 37.252 1.34 42102 2058 99.41 0.2 0.1984 0.1993 0.2303 0.2317 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 14.556 f_angle_d 1.335 f_chiral_restr 0.084 f_bond_d 0.011 f_plane_restr 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4099 Nucleic Acid Atoms Solvent Atoms 156 Heterogen Atoms 34
Software Software Software Name Purpose PHENIX refinement XDS data reduction Aimless data scaling PHASER phasing