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The internal aldimine form of the wild-type Salmonella typhimurium Tryptophan Synthase in complex with inhibitor N-(4'-trifluoromethoxybenzenesulfonyl)-2-amino-1-ethylphosphate (F9F) at the enzyme alpha-site, cesium ion at the metal coordination site and L-Histidine at the enzyme beta-site at 1.55 Angstrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4HT3
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 7.8 298 50 mM Bicine-CsOH, 10% PEG 8,000, 2 mM Spermine, 50mM L-Histidine, pH 7.8
Crystal Properties Matthews coefficient Solvent content 2.54 51.66
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 182.149 α = 90 b = 59.18 β = 94.81 c = 67.354 γ = 90
Symmetry Space Group C 1 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 100 IMAGE PLATE RIGAKU RAXIS IV++ VariMax HighFlux 2021-01-11 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU MICROMAX-007 HF 1.5418
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Rrim I (All) Rpim I (All) 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 1.599 90.754 90.1 0.045 0.045 0.065 0.033 12.6 3.8 84746
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Rrim I (All) Rpim I (All) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.6 1.69 72.3 0.194 0.194 0.258 0.132 3.8 3.8
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 (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 4HT3 1.6 39.14 80589 4139 89.8 0.1313 0.1289 0.129 0.1793 0.1797 RANDOM 19.879
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] 0.08 -0.07 -0.01 -0.06
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 33.878 r_dihedral_angle_4_deg 18.381 r_dihedral_angle_3_deg 12.565 r_dihedral_angle_1_deg 6.203 r_rigid_bond_restr 1.898 r_angle_refined_deg 1.356 r_chiral_restr 0.095 r_bond_refined_d 0.007 r_gen_planes_refined 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4963 Nucleic Acid Atoms Solvent Atoms 756 Heterogen Atoms 109
Software Software Software Name Purpose xia2 data reduction SCALA data scaling MOLREP phasing DM phasing REFMAC refinement PDB_EXTRACT data extraction