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Structural Studies Reveal the Inactivation of E. coli L-aspartate aminotransferase by (s)-4,5-dihydro-2thiophenecarboylic acid (SADTA) via two mechanisms (at pH 7.0).
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AMQ
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 EVAPORATION 7 298 The well solutions contained 25 mM potassium phosphate and 43% saturated ammonium sulfate with 20 mM of SADTA at pH 7.0, EVAPORATION, temperature 298K
Crystal Properties Matthews coefficient Solvent content 2.94 58.11
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 153.91 α = 90 b = 84.684 β = 90 c = 78.865 γ = 90
Symmetry Space Group C 2 2 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 CCD ADSC QUANTUM 315 2005-02-20 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 14-BM-C 0.9 APS 14-BM-C
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 1.7 27 96.1 0.057 13.7 4.5 54569
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 1.7 1.76 96.6 0.525 2.6 4.1 5425
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (I) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1AMQ 1.7 27 2.6 54569 2892 96.12 0.14673 0.14472 0.18419 0.1775 RANDOM 22.314
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] -1.1 0.84 0.26
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 32.872 r_dihedral_angle_4_deg 20.111 r_dihedral_angle_3_deg 14.562 r_dihedral_angle_1_deg 5.795 r_scangle_it 5.7 r_scbond_it 4.21 r_mcangle_it 2.611 r_angle_refined_deg 1.832 r_mcbond_it 1.811 r_nbtor_refined 0.316
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 32.872 r_dihedral_angle_4_deg 20.111 r_dihedral_angle_3_deg 14.562 r_dihedral_angle_1_deg 5.795 r_scangle_it 5.7 r_scbond_it 4.21 r_mcangle_it 2.611 r_angle_refined_deg 1.832 r_mcbond_it 1.811 r_nbtor_refined 0.316 r_nbd_refined 0.25 r_symmetry_vdw_refined 0.228 r_symmetry_hbond_refined 0.203 r_xyhbond_nbd_refined 0.18 r_chiral_restr 0.122 r_bond_refined_d 0.019 r_gen_planes_refined 0.009
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2986 Nucleic Acid Atoms Solvent Atoms 380 Heterogen Atoms 122
Software Software Software Name Purpose REFMAC refinement ADSC data collection HKL-2000 data reduction HKL-2000 data scaling PHASER phasing