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The Structure of Wild-Type E. Coli Aspartate Transcarbamoylase in Complex with Novel T State Inhibitors at 2.50 Resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1ZA2 pdb entry 1ZA2
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 MICRODIALYSIS 5.7 298 ATCase holoenzyme was crystallized by microdialysis, using 50 L wells. The enzyme solution, at ~18 mg/mL, was dialyzed against a solution of 40 mM citric acid, 3 mM sodium azide, 1 mM 2-mercaptoethanol, 1 mM cytidine 5 -triphosphate, 0.2 mM EDTA (pH 5.7), MICRODIALYSIS, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.9 57.59
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 120.9 α = 90 b = 120.9 β = 90 c = 141.61 γ = 120
Symmetry Space Group P 3 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 110 IMAGE PLATE RIGAKU RAXIS IV 2005-03-31 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RU200 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 2.5 28.45 99.1 0.075 13 4.96 41902 41523
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 2.5 2.59 99.6 0.37 3.9 4.78 4143
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 1ZA2 2.5 28.45 41902 41474 4211 99 0.211 0.211 0.211 0.2114 0.2389 0.2382 random
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]
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 7216 Nucleic Acid Atoms Solvent Atoms 529 Heterogen Atoms 110
Software Software Software Name Purpose CrystalClear data collection d*TREK data reduction AMoRE phasing CNS refinement CrystalClear data reduction d*TREK data scaling