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Crystal Structure of E. coli Argininosuccinate Synthetase in Complex with ATP and Citrulline
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1K92 PDB ENTRY 1K92
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 298 sodium/potassium phosphate, guanidine hydrochloride, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.52 40
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 76.478 α = 90 b = 104.222 β = 90 c = 128.835 γ = 90
Symmetry Space Group I 2 2 2
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 MARRESEARCH 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 41 93 0.082 11.8 6.7 35158 32696 20.1
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 1.99 2.06 71.9 0.396
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 (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 1K92 2 40.84 35158 32696 3272 92.9 0.192 0.192 0.1906 0.229 0.2291 RANDOM 35.4
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] 14.11 -5.17 -8.94
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.9 c_scangle_it 3.3 c_mcangle_it 2.24 c_scbond_it 2.18 c_angle_deg 1.5 c_mcbond_it 1.39 c_improper_angle_d 0.91 c_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3418 Nucleic Acid Atoms Solvent Atoms 186 Heterogen Atoms 68
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing