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The external aldimine crystal structure of Salmonella typhimurium Tryptophan Synthase mutant beta-S377A in complex with cesium ion at the metal coordination site. The single beta-Q114 rotamer conformation allows a hydrogen bond to form with the PLP oxygen at the position 3 in the ring
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6X0C
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 8 298 50 mM Bicine-CsOH, 10% PEG 8,000, 4 mM Spermine, pH 8.0
Crystal Properties Matthews coefficient Solvent content 2.56 52.04
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 182.714 α = 90 b = 58.653 β = 94.98 c = 67.03 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++ Osmic Varimax HF ArcSec 2020-01-16 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 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 1.7 91.012 94.6 0.084 0.118 0.068 4.2 2.7 73477
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 1.75 1.84 98.4 0.329 0.329 0.411 0.238 1 2.7
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 6X0C 1.7 39.22 1.43 73403 3641 94.21 0.1954 0.1936 0.1938 0.2303 0.23 25.1768
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 4875 Nucleic Acid Atoms Solvent Atoms 422 Heterogen Atoms 136
Software Software Software Name Purpose xia2 data reduction SCALA data scaling MOLREP phasing DM phasing PHENIX refinement PDB_EXTRACT data extraction