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Crystal structure of tetra mutant (D67E,A68P,L98I,A301S) of O-acetylserine sulfhydrylase from Salmonella typhimurium in complex with high-affinity inhibitory peptide from serine acetyltransferase of Salmonella typhimurium at 2.8 A
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1Y7L 1Y7L
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.5 278 0.1M HEPES, 1.3M Sodium citrate
Crystal Properties Matthews coefficient Solvent content 2.12 42.03
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 113.14 α = 90 b = 113.14 β = 90 c = 43.74 γ = 90
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 MAR scanner 345 mm plate 2012-05-08 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU 1.54179
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) CC (Half) 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 40.831 97.66 0.6911 0.713 42.47 10.1 69653 24.22
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.8 2.9 100 0.634
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1Y7L 2.8 40.831 6837 349 97.657 0.218 0.2156 0.2152 0.2723 0.2715 22.582
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] -0.508 -0.508 1.016
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 33.054 r_dihedral_angle_3_deg 17.92 r_dihedral_angle_4_deg 14.42 r_dihedral_angle_1_deg 6.612 r_lrange_it 6.061 r_scangle_it 3.422 r_mcangle_it 2.691 r_scbond_it 2.363 r_mcbond_it 1.659 r_angle_refined_deg 1.515
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 33.054 r_dihedral_angle_3_deg 17.92 r_dihedral_angle_4_deg 14.42 r_dihedral_angle_1_deg 6.612 r_lrange_it 6.061 r_scangle_it 3.422 r_mcangle_it 2.691 r_scbond_it 2.363 r_mcbond_it 1.659 r_angle_refined_deg 1.515 r_nbtor_refined 0.3 r_symmetry_nbd_refined 0.244 r_symmetry_xyhbond_nbd_refined 0.239 r_nbd_refined 0.216 r_xyhbond_nbd_refined 0.112 r_chiral_restr 0.108 r_bond_refined_d 0.007 r_gen_planes_refined 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2303 Nucleic Acid Atoms Solvent Atoms 7 Heterogen Atoms
Software Software Software Name Purpose REFMAC refinement HKL-2000 data reduction SCALA data scaling PHASER phasing