7L1H

The aminoacrylate 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 and cesium ion at the metal coordination site at 1.50 Angstrom resolution. Three water molecules are close to the amynoacrylate at the enzyme beta-site


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 4HN4 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.829850 mM Bicine-CsOH, 10% PEG 8,000, 2 mM Spermine, pH 7.8
Crystal Properties
Matthews coefficientSolvent content
2.5952.6

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 183.97α = 90
b = 59.73β = 94.7
c = 67.42γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IV++VariMax HighFlux2020-03-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU MICROMAX-007 HF1.5418

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)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.591.67689.60.0540.0540.0630.03311.23.3104698
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)RedundancyNumber Unique Reflections (All)
11.51.5844.60.2630.2630.3440.2182.72.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT4HN41.539.499207521289.470.14050.13830.1846RANDOM23.077
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]
-0.24-0.210.150.13
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.301
r_dihedral_angle_4_deg17.202
r_dihedral_angle_3_deg12.69
r_dihedral_angle_1_deg6.149
r_rigid_bond_restr1.956
r_angle_refined_deg1.383
r_chiral_restr0.097
r_gen_planes_refined0.008
r_bond_refined_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5009
Nucleic Acid Atoms
Solvent Atoms921
Heterogen Atoms138

Software

Software
Software NamePurpose
iMOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
DMphasing
REFMACrefinement
PDB_EXTRACTdata extraction