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Crystal Structure of E.coli DHFR in complex with NADPH and the inhibitor compound 10a.
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.5 297.15 PEG 6000, imidazole, calcium chloride, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 297.15K
Crystal Properties Matthews coefficient Solvent content 2.072 38.35
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 34 α = 90 b = 44.72 β = 90 c = 98.05 γ = 90
Symmetry Space Group P 21 21 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 IMAGE PLATE RIGAKU RAXIS IV Mirrors 2003-02-23 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU300 1.5418
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 1.89 40.68 98.1 0.071 8.8 2.66 12541 12305 3 3 18.3
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 1.89 1.96 98.9 98.9 0.343 2.4 2.69 1221
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Cut-off Sigma (F) 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 2.13 25 2 8708 8517 770 96.4 0.2384 0.2348 0.233 0.246 0.256 0.2677 Random 26.565
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] 2.845 -7.42 4.575
RMS Deviations Key Refinement Restraint Deviation c_dihedral_ang_deg 29.6 c_angle_deg 1.9 c_improper_angle_deg 1.31 c_bond_d 0.021
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1268 Nucleic Acid Atoms Solvent Atoms 407 Heterogen Atoms 74
Software Software Software Name Purpose d*TREK data processing CNS refinement PDB_EXTRACT data extraction d*TREK data reduction d*TREK data scaling CNS phasing