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Crystal Structure of the S290G Active Site Mutant of TS-DHFR from Cryptosporidium hominis
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1QZF PDB Entry 1QZF
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8 291 0.1mM ammonium sulfate, 0.3M lithium sulfate, 0.1M Tris, 10% PEG 6000, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties Matthews coefficient Solvent content 4.49 72.63
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 215.026 α = 90 b = 116.204 β = 94.27 c = 216.601 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 2005-09-09 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 1.1000 NSLS X25
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 2.8 50 99.5 0.117 13.4 3.3 130177 2 2 65
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) 2.8 2.9 99.6 0.538 2.9 3.3 12987
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 1QZF 2.8 50 130114 123564 6550 99.2 0.222 0.222 0.222 0.2147 0.259 0.251 random 66.525
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] -12.8 -8.79 2.05 10.75
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 25.3 c_improper_angle_d 2.23 c_angle_deg 1.4 c_bond_d 0.009
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 20847 Nucleic Acid Atoms Solvent Atoms 404 Heterogen Atoms 680
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling SOLOMON phasing CNS refinement PDB_EXTRACT data extraction CBASS data collection HKL-2000 data reduction AMoRE phasing